八下期末前练习题
2020年八年级语文下学期期末考前练习题 作文
作文1. 【作文】从下面两个题目中任选一题，写一篇文章。
(一）专注地欣赏，让我们更好地与自然相融、与历史相拥;专注地阅读，让我们充分地品评人物、领悟主题；专注地学习，让我们收获新知、提升能力……请将“专注让我________”补充完整，构成你的题目，写一篇文章。
不限文体（诗歌除外)。
（二)加盖印章的汉字、字母数字的组合、生物特征的识别……密码不断发展演变，走向无限可能。
它依托科技，见证历史，承载文化，关联生活。
围绕密码,有什么样的故事发生呢？请以“密码的故事"为题目，发挥想象，完成一篇记叙文。
要求：①请将作文题目抄写在答题纸上。
②字数在600-800之间。
③不要出现所在学校的校名或师生姓名。
答案:略.解析（一)这是一道半命题作文，前面有一段提示性的语言，我们可以依据提示语来打开思路，但是这一个题目要想写出新意，需要好好构思一下,本作文写作难度稍大。
从本题目中，我们可以得出两个关键词语，一个是“专注”，另一个是“我"。
其中“我”限定了写作对象。
“专注”是对某件事专心致志,它要求我们不分神，集中精力地对待每件事.横线上可补写短语为：走向成功、更出色、梦想成真、扬帆远航等。
这个题目的含义是:因为专注，所以“我"怎么样。
写作时要重点记叙“我"是如何做到专注的，结果怎么样也要具体叙述出来.结尾可以表达自己的感悟。
（二）这是一道命题作文试题,只要理解这个题目的意思，难度不大，学生的写作空间较大，容易打开思路，写作方向可大可小。
从题目“密码的故事”中，我们可以得出关键词语“密码"。
分析这个词语,写作时可以写其本义，比如日记本的密码。
可以这样写：“我”有一个密码日记本,妈妈绞尽脑汁破解密码，重点记叙“我"和妈妈智斗的过程，由这件事表现妈妈对“我”的关爱。
还可以写“密码”的引申义，比如写“友谊的密码”。
可以记叙自己找寻友谊的过程，最终破解了获得友谊的密码。
八下期末数学试卷必刷题
一、选择题（每题4分，共20分）1. 已知等腰三角形ABC中，AB=AC，∠B=40°，则∠C的度数是（）A. 40°B. 80°C. 100°D. 140°2. 在直角坐标系中，点A（-3，2），点B（3，-2），则线段AB的长度是（）A. 2B. 4C. 6D. 83. 已知一元二次方程x^2 - 5x + 6 = 0，则该方程的解为（）A. x1=2，x2=3B. x1=3，x2=2C. x1=-2，x2=-3D. x1=-3，x2=-24. 若sinθ=3/5，则cosθ的值为（）A. 4/5B. -4/5C. 3/5D. -3/55. 已知函数y=kx+b，其中k≠0，当x=1时，y=2；当x=2时，y=4，则该函数的图像经过（）A. 第一、二、四象限B. 第一、二、三象限C. 第一、二、四象限D. 第一、二、三象限二、填空题（每题5分，共25分）6. 在直角坐标系中，点P（2，-3），则点P关于x轴的对称点坐标为______。
7. 已知等腰三角形ABC中，AB=AC，∠B=50°，则∠A的度数为______。
8. 已知一元二次方程x^2 - 4x + 3 = 0，则该方程的解为______。
9. 若sinθ=1/2，则cosθ的值为______。
10. 已知函数y=2x+1，当x=3时，y=______。
三、解答题（每题10分，共40分）11. （1）已知等腰三角形ABC中，AB=AC，∠B=40°，求∠A的度数。
（2）在直角坐标系中，点P（2，-3），点Q（-4，5），求线段PQ的中点坐标。
12. （1）已知一元二次方程x^2 - 5x + 6 = 0，求该方程的解。
（2）已知函数y=2x+1，当x=3时，求y的值。
13. （1）若sinθ=3/5，求cosθ的值。
（2）已知函数y=kx+b，其中k≠0，当x=1时，y=2；当x=2时，y=4，求该函数的图像经过的象限。
八下期末训练题
八年级下册数学期末训练题1、在平面直角坐标系中，反比例函数22a a y x-+=图象的两个分支分别在（ ）A ．第一、三象限B ．第二、四象限C ．第一、二象限D ．第三、四象限 2、如图所示，四边形ABCD 是边长为4cm 的正方形，动点P 在正方形ABCD 的边上沿着A →B →C →D 的路径以1cm/s 的速度运动，在这个运动过程中△APD 的面积s （cm 2）随时间t （s ）的变化关系用图象表示，正确的是 （ ）A ．B ．C ．D ．3、一组数据-1，-2，x ，1, 2的平均数为0，则这组数据的方差为 ．4、如图，边长为6的正方形ABCD 内部有一点P ,BP =4， ∠PBC =60°，点Q 为正方形边上一动点，且△PB Q 是等腰三角形，则符合条件的Q 点有 个5、梯形ABCD 中，BC AD //，1===AD CD AB ，︒=∠60B 直线MN 为梯形ABCD 的对称轴，P 为MN 上一点，那么PD PC +的最小值 。
6、小林在初三第一学期的数学书面测验成绩分别为：平时考试第一单元得84分，第二单元得76分，第三单元得92分；期中考试得82分；期末考试得90分.如果按照平时、期中、期末的权重分别为10%、30%、60%计算，那么小林该学期数学书面测验的总评成绩应为_____________分。
7、如图，在直角梯形ABCD 中，,8,24,90,//0cm AB cm AD B BC AD ===∠cm BC 26=，动点P 从A 开始沿AD 边向D 以s cm /1的速度运动；动点Q 从点C 开始沿CB 边向B 以s cm /3的速度运动。
P 、Q 分别从点A 、C 同时出发，当其中一点到达端点时，另外一点也随之停止运动，设运动时间为ts 。
（1）当t 为何值时，四边形PQCD 平行为四边形？ （2）当t 为何值时，四边形PQCD 为等腰梯形？ （3）当t 为何值时，四边形PQCD 为直角梯形？P 60° ABCDDA B MNC8、如图，已知平行四边形ABCD中，对角线AC，BD交于点O，E是BD延长线上的点，且ΔACE是等边三角形。
八下数学期末复习题
罗平县阿岗一中2013——2014学年八年级下学期数学期末复习题一、选择题（每小题3分，共30分）1、已知a ＜b ，化简二次根式b a 3-的正确结果是（ ）A ．ab a --B ．ab a -C ．ab aD ．ab a -2、已知1a a+=1a a -的值为（ ）A．± B ．8 C． D ．63、12a =-，则A ．12a <B ．12a ≤C ．12a >D ． 12a ≥4、下列命题中是真命题的是（ ）A ．两边相等的平行四边形是菱形B ．一组对边平行一组对边相等的四边形是平行四边形C ．两条对角线相等的平行四边形是矩形D ．对角线互相垂直且相等的四边形是正方形 5、已知a 、b 、c 是三角形的三边长，(a －9)2c 15-＝0，则三角形的形状是( ) A ．底与腰不相等的等腰三角形 B ．等边三角形 C ．钝角三角形 D ．直角三角形 6、到△ABC 的三个顶点距离相等的点是△ABC 的（ ）A.三边中线的交点B.三条角平分线的交点C.三边上高的交点D.三边垂直平分线的交点7、已知一次函数y ＝kx ＋b 的图像，如图所示，当x ＜0时，y 的取值范围是（ •）A ．y ＞0B ．y ＜0C ．－2＜y ＜0D ．y ＜－28、已知点A （2－a ，a +1）在第四象限，则a 的取值范围是（ ）A 、a>2B 、-1<a<2C 、a<-1D 、a<19、在Rt △ABC 中，∠C ＝90°，a ＝12，b ＝16，则c 的长为（ ）A ：26B ：18C ：20D ：2110、在四边形ABCD 中，若有下列四个条件：①AB//CD ；②AD=BC ；③∠A=∠C ；④AB=CD ，现以其中的两个条件为一组，能判定四边形ABCD 是平行四边形的条件有 （ ） A ．3组 B ．4组 C ．5组 D ．6组 二、填空题 （每小题3分，共30分）11、()()=-+201520141011101112、 命题：“全等三角形的对应角相等”的逆命题是_____________________________，这条逆命题是______命题（填“真”或“假”）13、一艘轮船以16海里∕小时的速度从港口A 出发向东北方向航行，同时另一轮船以12海里∕小时从港口A 出发向东南方向航行，离开港口3小时后，则两船相距 。
初二下册期末考试卷
初二下册期末考试卷一、选择题1. 下列哪个城市是中国的首都？A. 上海B. 广州C. 北京D. 香港答案：C. 北京2. 太阳是在白天出来，还是在黑夜？A. 白天B. 黑夜答案：A. 白天3. 以下哪个是地球上最高的山峰？A. 珠穆朗玛峰B. 埃菲尔铁塔C. 泰山D. 长城答案：A. 珠穆朗玛峰4. 以下哪个是世界上最长的河流？A. 长江B. 尼罗河C. 雅鲁藏布江D. 澳洲河答案：B. 尼罗河5. 以下哪个是我国最大的淡水湖？A. 青海湖B. 洞庭湖C. 太湖D. 鄱阳湖答案：A. 青海湖二、填空题6. 5+7-3=？答案：97. 中国的首都是______________。
答案：北京8. 圆周率π的近似值是_______________。
答案：3.149. 太阳系中最大的行星是______________。
答案：木星10. 《三国演义》是中国古代哪位作家写的？答案：罗贯中三、解答题11. 请用自己的语言简述水的循环过程。
答案：水的循环是指地球上水源的循环过程。
首先，太阳能使地球水面的水蒸气升华，形成云层。
之后，云层聚集成云团，降下雨水或雪。
雨水渗入地下，形成地下水或地下蓄水层。
地下水又会通过井泉、河流等方式重新回到地表，进入海洋。
海洋中的水会被太阳能再次蒸发，形成云层，循环往复。
12. 请用简单的语言解释为什么太阳是地球上最重要的能源。
答案：太阳是地球上最重要的能源，因为太阳能支撑了地球上的生态系统。
太阳能提供了光和热，使植物进行光合作用，为动物提供食物。
太阳能还驱动了水循环，维持了地球上的降水和气候，保证了地球上的生物得以生存。
没有太阳能，地球上就没有生命存在的可能。
黑龙江省齐齐哈尔市龙沙区2024届语文八下期末经典模拟试题含解析
黑龙江省齐齐哈尔市龙沙区2024届语文八下期末经典模拟试题注意事项1．考试结束后，请将本试卷和答题卡一并交回．2．答题前，请务必将自己的姓名、准考证号用0．5毫米黑色墨水的签字笔填写在试卷及答题卡的规定位置．3．请认真核对监考员在答题卡上所粘贴的条形码上的姓名、准考证号与本人是否相符．4．作答选择题，必须用2B铅笔将答题卡上对应选项的方框涂满、涂黑；如需改动，请用橡皮擦干净后，再选涂其他答案．作答非选择题，必须用05毫米黑色墨水的签字笔在答题卡上的指定位置作答，在其他位置作答一律无效．5．如需作图，须用2B铅笔绘、写清楚，线条、符号等须加黑、加粗．一、积累与运用。
（28分）1．（2分）下列句中加点词语的运用正确的一项是（）。
A．几十年过去了，老师的话仿佛历历在目．．．．，时常在我耳边响起。
B．这些人对个人的利益斤斤计较，对广大群众的疾苦却漫不经心．．．．。
C．为了锻炼我的自理能力，妈妈常常在我手忙脚乱的收拾房间时也忙得袖手旁观．．．．。
D．2019第13届中国（临沂）国际茶文化博览会开幕后，参观的人接踵而至．．．．。
2．（2分）下列加点字的音形有误的一项是（）A．家眷．（juàn）枸杞．（qǐ）悬殊．（shū）怒不可遏．（è）B．清冽．（liè）器皿．（mǐn）溯洄．（huí）销声匿．迹（nì）C．赋．予（fù）逸．事（yì）萦．绕（réng）狗皮高．药（gāo）D．寒噤．（jìn）敦．实（dūn）沟壑．（hè）目眩．神迷（xuàn）3．（2分）下列句子没有语病的一项是（）A．民俗是民间流传的习俗、风尚，是由民众创造并世代传承的民间文化。
B．中餐的推广使豆腐日益受到各国的欢迎是可以预期的。
C．不仅议论要提出观点，还要有能证明观点的材料。
D．《水浒传》记述了梁山好汉们从起义到兴盛再到最终失败。
阅读专题强化训练2020-2021学年人教版八年级英语下学期期末考前必备(含答案)
阅读理解专题强化训练——人教版八年级下册期末考前必备【练习1】It’s important for us to keep healthy. But in fact, many people have health problems. Many people fall ill and many children become heavier.As we grow older, we experience many life changes, such as job changes, children leaving home and physical (身体的) changes. How we grow from these changes is the key to staying healthy.These ways can help us keep our physical and emotional (情绪的) health. First, we must keep away from smoking and drinking. Second, we should do exercise every day. We can walk to school instead of taking a bus or a car. Third, we shouldn’t eat too much fast food. We can eat more fruit and vegetables.Many studies show that people always feel better when they’re with friends than when they’re alone. So be sure to make some friends.Staying healthy is important at any age and that doesn’t change just because we have a few more white hairs.1. The writer mainly tells us ______ has something to do with our health.A. what we likeB. what we experienceC. how we go to schoolD. how we look2. From the second paragraph, we can know if we want to keep healthy we must learn to face ______.A. life changesB. health problemsC. food problemsD. exercise problems3. The writer tells us ______ are the ways to stay healthy in the third paragraph.A. eating more fruit and doing exerciseB. stopping smoking and drinkingC. exercise and good eating habitsD. A, B and C4. If we want to feel better, we can______.A. see doctors oftenB. exercise more and drink lessC. keep our life fullD. make more friends5. The passage mainly tells us______.A. how to keep physical and emotional healthB. three ways to stay thinC. how to feel wellD. staying healthy is very important1-2 DBADD【练习2】Medical experts say most Americans do not get enough sleep. They say more Americans need to take a nap—that is to rest for a short period in the middle of the day. They give people advice to sleep lightly before continuing with other activities. The experts say naps might improve health by reducing pressure.Some European and Latin American companies have supported the idea of napping for many years. They ask people to leave work, go home and have a nap before returning. In the United States, some companies let workers rest simply in their offices. They believe this can help workers make fewer mistakes and also increase the amount of work that a person can do.Sleep experts say it is likely that people make more mistakes at work than at other times. They say people should not carry out important tasks when they feel sleepy. And they say the best thing to do is to take a nap. About twenty minutes of rest is all you need. Experts say this provides extra energy and can increase your effects until the end of the day. But experts said that a nap should last no more than twenty to thirty minutes. A longer nap will put the body into deep sleep and waking up will be difficult.1. This passage is probably taken from ___________.A. a story bookB. a posterC. a science fictionD. medical magazine2. What’s the best way to increase workers’ effects?A. Talking with friends.B. Doing relaxing exercises.C. Laughing, smiling and crying.D. Having a rest for twenty or thirty minutes.3. What will happen to the workers if they keep on working without any rest?A. They will get a lot of money.B. They will fail in their jobs and even cause a lot of trouble.C. They will live a happy life in the future.D. They will feel better after finishing everyday jobs.4. The meaning of the underlined word “reducing” in the first paragraph is “______A. 加大B. 缓解C. 产生D. 制造5. The passage mainly talks about____________.A. taking a nap during the dayB. the disadvantages of taking a napC. Americans who don’t have a nap during the weekendsD. the advantages of deep sleep1-5 ADDBB【练习3】Many of us don’t pay much attention to the importance of eye care. It is said that if you take care of your body, then you can surely be healthy. That is why our eyes should be given a lot of care. Natural eye care should be put in a number one place.There are several causes leading to poor eyesight like not enough food, genes (基因) and aging (老化). Televisions, computers and reading are also the causes of having poor eyesight. If you happen to work in front of the computer, it is best to take a break every once in a while.Something dirty can cause redness and they will make you feel uncomfortable. It is bad for your eyes too. If this happens, the best way is to clean your eyes by using cold water. You must also try your best to protect your eyes from harmful things. For example, sunglasses are not just for fashion but they can also serve as a great way to protect your eyesight from UVrays.Eating healthy foods will do good to your eyesight. Remember that vitamins A, C and E are good for eyes. Try to eat food groups that have these vitamins. And you should do eye exercises because exercise protects your eyesight too. If a person exercises regularly (定期地) and eats the right kind of food, his eyes will stay in good condition for a long time.All above are natural ways of eye care that help us keep healthy eyes. Being happy all the time can be helpful to a person’s eyesight, too. In a word, eye care is very important, no matter how old a person is.1. ___________ is the most important way to protect our eyes.A. Taking medicineB. Natural eye careC. Seeing the doctorD. Being happy all the time2. What should you do if you have to work in front of the computer?A. Having a rest after working for a while.B. Eat healthy foods.C. Clean the eyes by using cold water.D. Wear a pair of sunglasses.3. What do the underlined words “UV rays” mean?A. 闪电B. 沙尘C. 紫外线D. 超声波4. Which is the best title of the passage?A. Ways of Eye ExercisesB. Ways of Eye CareC. Ways of Being HappyD. Ways of Being Healthy1-4 BACB【练习4】Early to bed, early to rise, makes a man healthy, wealthy and wise. This is an old English saying. Have you heard of it before? It means that we must go to bed early and get up early in the morning. Then we shall be healthy. We shall also be rich (wealthy) and clever (wise).This is true. The body must have enough sleep to be healthy. Children of young age should have ten hours’ sleep every night. Children who do not have enough sleep cannot do their work very well. They will not be wise and they may not become wealthy!The body also needs exercise. Walking, running, jumping, swimming and playing games are all exercise. Exercise keeps the body strong. Exercise also helps the blood (血液) to move around inside the body. This is very important. Our blood takes food to all parts of our body. The head also needs blood. Exercise helps us to think better!1. If we get up early and go to bed early, we’ll ______ .A. have enough exerciseB.be healthyC. think betterD. have strong blood2. If a child doesn’t have 10 hours’ sleep, maybe he _____ .A. becomes wiseB. won’t do well in his workC. goes to school in timeD. has enough sleep3. A person needs exercise because _______ .A. it makes him healthyB. he has a lot of homework to doC. he is strong enoughD. he does exercise4. Exercise makes the ______ move quickly and smoothly(流畅).A. BodyB. bloodC. childrenD. head5. Which of the following if Not TRUE?A. Exercise does good to a person’s headB. A student should have 10 hours’ sleepC. It’s good for you to get up early and go to bed early.D. If you have enough blood, you’ll be wise.1-5 BBABD【练习5】Running is becoming popular these days. Many of us run for health. Doctors say many health problems come from these bad habits：eating and drinking too much, smoking and not taking enough exercise. Doctors tell us, “Eat and drink less, don’t smoke, and exercise more.”Running is a good form of exercise because it helps build a strong heart. It also helps most people lose weight. One 68-year-old woman runs three times a week. “I love to eat,” she says. She runs to lose weight.Running is good for health in other ways, too. Many runners say running keeps colds and other small health problems away. “Running is my doctor,” says one man.Running can also help people to relax. So today men and women of all ages enjoy running.1. Many people enjoy running because they want to___________.A. eat muchB. keep healthyC. run fastD. waste time2. Doctors tell us _____________.A. not to smokeB. not to exerciseC. to drink muchD. to eat much3. The underlined word means “_______” in Chinese.A. 疾病B. 体重C. 速度D. 健康4. The third paragraph shows_____________.A. running helps people to relaxB. people who like running have many health problemsC. running helps build a strong heartD. people who like running have fewer health problems5. The writer mainly tells us ___________.A. how to runB. how to lose weightC. running is a good way to keep healthyD. running is better than doctors1-5 BABDC【练习6】Mary Jo Ray turned 113 in May, 2008. She was the twelfth oldest person in the world. Ray was one of the few people who lived to more than (多于) 110 years old. We often call them. “She often drinks milk. She hardly gets angry with others and is always happy. So she is in good health. I think her reason for long life is drinking milk every day and trying to be happy,” said her granddaughter (孙女).Her doctor, Dr. Perls, said another reason for Ray’s long life is her genes (基因). She got them from her parents. He said, “These genes can keep you in good health and let you live longer. People can usually live to about 80 years old. Those with the right genes can live to more than 100 years. They also pass those genes to their children. So if a person’s parents live long, he or she will probably live long, too.” Dr. Perls also said, “You may not have those genes. But if you don’t smoke, don’t drink too much, and do exercise or do other things to relax, you still can live long.”1. Mary Jo Ray was the ______ oldest person in the world in 2008.A.11thB.12thC.13thD.14th2. The underlined word “centenarian” means “_______” in Chinese.A. 健康的人B. 聪明的人C. 杰出的人D.百岁的人3. From the passage, we can learn that Mary Jo Ray ___________.A. hardly drinks milkB.is never happyC. has the genes for long lifeD. often gets angry with others4. Mary Jo Ray’s father probably lived a(n) _______ life.A. LongB. hardC. shortD. easy5. The passage is mainly about _______.A. the family of Mary Jo RayB. how people can live betterC. why Mary Jo Ray lives longD. Mary Jo Ray’s doctor1-5 BDCAC【练习7】Coffee has played an important role in people’s lives for thousands of years, and today coffee is grown and enjoyed worldwide; it is still one of the favorite drinks in the world. Many people in the world begin their busy day by drinking a cup of coffee or several cups of coffee. They have always said that a cup of coffee in the morning helps them begin their day in the right way.Do you know what in the coffee makes our bodies and brains (头脑) active? It is caffeine (咖啡因). Caffeine may increase a person’s mental and physical abilities (精力和体力). For example, two cups of coffee will make you breathe (呼吸) faster and augment body temperature. All this makes your heart beat faster, and doctors warn that this may be a little dangerous.Caffeine is found in tea, coffee, chocolate and some other foods. A little caffeine is probably not harmful. But too much caffeine can make people nervous and sleepless.1.“A cup of coffee in the morning helps them begin their day in the right way.” What does it mean?A. A cup of coffee helps them do the right job.B. A cup of coffee helps them act in the right way the whole morning.C. A cup of coffee makes their work more interesting.D. A cup of coffee makes them full of spirit for the work the whole day.2. The underlined word “augment” means __________.A. make moreB. drinkC. stopD. make less3. Caffeine is found in __________.A. tea and waterB. chocolate, meat and some other foodsC. coffee and creamD. coffee, tea, chocolate and some other foods4. From the passage, we may know drinking coffee late at night might _________.A. give you a headacheB. make you fall asleepC. keep you awakeD. may be dangerous5. Which of the following is NOT true?A. People have used coffee since thousands of years ago.B. Caffeine does no harm to our body.C. Two cups of coffee will make you breathe faster and increase body temperature.D. Caffeine may increase man’s mental and physical abilities.1-5 DADCB【练习8】“ Early to bed and early to rise make a man healthy , wealthy and wise.” This is an old English saying. It means that when we go to bed early, we can get up early the next morning. Then we will become healthy. We will also become rich and clever.This is true. To keep healthy, we must have enough sleep. Experts (专家) say that adults should get seven to eight hours of sleep a night. Teenagers need nine to ten hours. And school-aged children may need more than ten hours of sleep. Children who do not have enough sleep can’t do their work very well. They won’t be wise and they may not become wealthy！We also need exercise. Walking, running, swimming and playing games are all exercise. Exercise keeps us strong. It also helps the blood to move around the body. This is very important. Our blood takes the nutrition (营养) from food to all parts of our body.The head also needs blood. So exercise that moves the blood to our head helps us think better！1. If we get up early and go to bed early, we’ll .A. become weakB. have more timeC. be healthyD. have more work to do2. Who needs most hours of sleep to keep healthy？A. Adults.B. Teenagers.C. Experts.D. School-aged children.3. A child when he does not have enough sleep.A. can’t study wellB. will be wiseC. will be wealthyD. will be active in class4. A person needs exercise because .A. he is not strong enoughB. it helps make him healthyC. he has a lot of homework to doD. it can bring him much blood5. Which of the following is NOT true？A. Exercise helps the blood to move.B. Exercise is good for a person’s head.C. If we have enough blood, we’ll be wise.D. It’s good for us to get up early and go to bed early.1-5 C D A B C【练习9】Hobbies are very important to a person. Without having any hobby, life won’t be as colorful as it should be.I have a number of hobbies , such as collecting stamps, playing musical instruments (乐器), reading, and doing sport activities. When I am free,1 will spend time on my hobbies. When I am in a blue mood (情绪低落), I will also do my hobbies to cheer myself up.Hobbies can help us improve our moods. Many hobbies require you to put your heart in them. For example , when you play a musical instrument , you have to practice over and over in order to perform (表演) good music. After a period (一段时期) if you still enjoy it ,gradually (逐渐地) it will become a hobby of yours. But remember ,a hobby is like gold (金子) under the ground; no hobby will come to your unless (除非) you dig it out yourself. If you can treat study as one of your hobbies, learning will be more enjoyable. I hope all of you can find your own hobbies and also have fun from them.1. What makes our life colorful？A. Playing musical instruments.B. Collecting stamps.C. The blue mood.D. The hobbies.2. Hobbies sometimes can make a personA. in a blue moodB. find gold under the groundC. cheer himself/herself upD. perform good3. If we want to have a hobby, we mustA. practice over and over.B. put our heart in it.C. spend a lot of time on it.D. all the above.4. How can we make our study enjoyable？A. Practice over and over.B. Improve our moods.C. Treat our study as a hobby.D. We shouldn’t have hobbies5. Which of these is WRONG?A. Hobbies are important for a person.B. Playing musical instruments is a Kind of hobby.C. If we often do something and don’t enjoy doing it, it will be our hobbies someday.D. A hobby can be gold if we dig it.1-5 D C B C C【练习10】You may hear about earthquakes, but do you know, what to do before, during and after an earthquake? Here is some advice for you:Before an earthquake. It’s necessary to prepare yourself and your family. All family members should know how to turn off gas, water and electricity and Know useful telephone numbers (doctor, hospital, police ,119, etc.). Never put heavy things over beds.During an earthquake. It’s important for each of you to stay calm( 冷静) . If you are indoors, quickly move to a safe place in the room such as under a strong desk or a strong table, the purpose is to protect yourself from falling objects. Stay away from windows, large mirrors, heavy furniture and so on. If you are cooking, turn off the gas.If you are outdoors, move to an open area like a playground. Move away from buildings, bridges and trees. If you are driving, stop the car as soon as possible, staying away from bridges and tall buildings Stay in your car.After an earthquake once the shaking has stopped, do not run out of the building at once. It’s better to wait and leave when it is safe.Check around you and help the people who are in trouble. If your building is badly broken you should leave it. If you smell or hear a gas, get everyone outside and open windows and doors. If you can do it safely, turn off the gas. Report it to the gas company.1. Which of the following is mentioned in the second paragraph？A. People should know how to turn on gas.B. People should know how to save water.C. People shouldn’t put heavy boxes over beds.D. People shouldn’t forget the phone numbers of others.2. When an earthquake happens, can help you deal with it.A. standing stillB. staying calmC. looking outsideD. moving indoors3. During an earthquake, if you are driving in an open area, you should .A. speed up your car B stop your car and stay inC. slow down your carD. stop your car and run out4. When the earth stops shaking, you should .A. check around you firstB. run out of the building at onceC. break the windows and doorsD. write a report to your company5. You can learn after reading the passage.A. what an earthquake is likeB. what to do to avoid earthquakeC. how an earthquake happensD. how to protect yourself in an earthquake1-5 D B B A D【练习11】Do you know the story about Vince? It was a true story. Vince was an English boy and he was eight years old. He didn’t like soap or water. Three or four times a day his mother said to him, “Vince, your hands are very dirty again.” Go and wash them.” But Vince never washed them well. He only put his hands in the water for a few seconds and then took them out again.Vince’s uncle and aunt lived in another city. One day they came to stay with Vince’s parents, and they brought their small son, Toby, with them. Toby was seven years old and he didn’t like soap or water, either. The boys sat with their parents for a few minutes and then they went outside. When they were playing, Vince looked at Toby’s hands and then went back to Toby’s parents and said proudly (骄傲地), “Toby’s hands are dirtier than mine, ” “Of course they are,” Toby said angrily. “You are one year older than I am.”1. Vince’s mother asked him to______ three or four times a day.A. wash his handsB.do his homeworkC. clean his bedroomD. wash his teeth2. When Vince saw Toby’s hands, he felt ________.A. SorryB. proudC. sadD. terrible3. Vince’s hands were a little______ than Toby’s.A. DirtierB. cleanerC. biggerD. smaller4. From the story we know that_______ .A. Vince liked soap and water, but Toby didn’t.B. Toby liked soap and water, but Vince didn’t.C. Vince and Toby liked soap and water.D. Vince and Toby didn’t like soap or water.5. How many people are there in the story?A. Four.B. FiveC. Six.D. Seven.1-5 ABBD【练习12】One day, there was a blind man called John sitting on the bench with a hat by his feet and a sign that read, “I am blind. Please help me.”A creative publicist (广告员) named Tom was walking by the blind man and stopped to see that the man only had a few coins in his hat. He put a few of his own coins in the hat.Without asking for permission (允许), he took the sign, turned it around and wrote a new message. Then he put the sign by the feet of the blind man and left.Later that afternoon the publicist returned to the blind man and noticed that his hat was almost full of bills (钞票) and coins. The blind man recognized (识别) his footsteps and asked if it was he who had changed his sign. He also wanted to know what the man wrote on it.The publicist said, “I just wrote the message a little differently.” He smiled and went on his way.The new sign read, “Spring has come, but I can’t see anything.”1. What’s the blind man’s name?A. Tom.B. John.C. Tony.D. Sorry, I don’t know.2. Who wrote a new message?A. The blind man.B. The teacher.C. The publicist.D. The farmer.3. How did the blind man recognize the publicist?A. By his sign.B. By his footsteps.C. By his voice.D. By his coins.4. When did the story happen?A. In spring.B. In summer.C. In autumn.D. In winter.5. What can we learn from the passage?A. Publicists are always curious (好奇) about everything.B. We can get more money by changing a sign.C. The blind man is not clever, so he has little money.D. The power of language is great.1-5CBCBA。
八年级物理学科下学期期末考试题目和答案
八年级物理学科下学期期末考试题目和答
案
一、选择题
1. 以下哪个单位用于测量物体的质量？
A. 焦耳
B. 秒
C. 千克
D. 牛顿
答案：C
2. 物体在重力作用下自由下落的加速度是多少？
A. 9.8 m/s^2
B. 5.0 m/s^2
C. 3.0 m/s^2
D. 1.0 m/s^2
答案：A
3. 以下哪个物理量与功率有关？
A. 质量
B. 加速度
C. 距离
D. 时间
答案：D
二、填空题
1. 加速度的单位是________。
答案：m/s^2
2. 牛顿第一定律也被称为________。
答案：惯性定律
三、简答题
1. 请解释什么是动能。
答案：动能是物体由于运动而具有的能量，它与物体的质量和速度有关。
2. 请说明什么是电流。
答案：电流是电荷在单位时间内通过导体横截面的流动量，其单位是安培（A）。
四、计算题
1. 一个质量为2 kg的物体以10 m/s的速度沿直线运动，求其动能。
答案：动能 = 1/2 * m * v^2 = 1/2 * 2 kg * (10 m/s)^2 = 100 J
2. 一个电流为5 A的电流表连接在电路中，电阻为10 Ω，求电路中的电压。
答案：电压 = 电流 * 电阻= 5 A * 10 Ω = 50 V。
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八下期末前练习题---Why is he so _______?----Because he is watching an _______ football match.A. excited, excitedB. exciting, excited .C. exciting, excitingD. excited, exciting2. Most of the kids in our enjoy pop songs,______ some hit songs on the Internet like Gangnam Style.A. besidesB. including .C. exceptD. without3. He often tell lies. I don’t _________ what he says at all.A. trustB. rememberC. believeD. doubt4. What program do you like _______?A. listenB. to listenC. listeningD. listening to5. ---What did the teacher say?---He said we _____ an exam the next day.A. will haveB. hadC. would haveD. have6. Here is the book. First _______ it and then tell me what you think of it.A. look atB. look throughC. look upD. look after7. ---Where’s your friend?---She has _________ Shanghai. She won’t be back until next week.A. beenB. been toC. gone toD. gone8. That’s the end of the _____ news.A. six-o’clockB. six o’clock’sC. six o’clockD. six-o’clock9. ---Have you visited your grandfather?--- Yes, I ______ him last week.A. visitB. visitedC. am visitingD. have visited10. ---Who teaches you chemistry?---________. I learn it by myself.A. No.B. No oneC. NeitherD. None11. ---Have you _____ been to Europe?---No, I’ve _______ been there.A. never, justB. ever, neverC. just, neverD. never,ever12. ---How long does it _______ you to finish the book?---Two hours.A. takeB. payC. spendD. cost13. Could you tell me _______?A. how old is sheB. how old she isC. she is how oldD. how she is old14. Kate has been stronger ______ playing tennis every week.A. forB. sinceC. withD. by15. He’s not ______ to train for the Olympics.A. enough strongB. strong enoughC. enough weakD. weak enough16. I can’t help ______ when I watch the sad ending of the movie.A. laughingB. cryingC. cryD. to cry17. There _____ a football match the Friday afternoon.A. hasB. is going to haveC. will haveD. will be18. Reading is a good hobby because it can ______ you enjoyment and success.A. carryB. takeC. bringD. teach19. ---Please ______ the form.---OK. Well, may I use your pen?A. pay forB. check inC. pick upD. fill out20. The lesson is easy because there are _____ new words in it.A. fewB. littleC. a fewD. a little21. I have to be in a hurry, ______ I’ll be late for school.A. soB. andC. orD. but22. The trip in the city is so _______ that we’ll never go there again.A. comfortableB. pleasantC. boringD. wonderful23. I don’t regret _______ her what I thought though she was angry with me then.A. to tellB. tellingC. toldD. have told24. ---How do you feel when you watch the national flag go up?--- I makes me _____ very proud.A. feltB. to feelC. feelingD. feel25. ---What’s the ______ of his visit to China?--- To study Chinese and learn more about Chinese culture.A. timeB. purposeC. priceD. distance26. ______! The water is so hot!A. Look downB. Look upC. Look afterD. Look out27. Please _____ the radio a little. I’m just answering a telephone.A. turn onB. turn offC. turn upD. turn down28.---Is your uncle still smoking?---Yes. It’s nearly five years ______ he smoked.A. whenB. afterC. sinceD. until29. I remembered ______ my cell phone in my pocket, but it isn’t there now.A. puttingB. putC. to putD. have put30. ---Thanks for your help!---_______.A. Don’t mention it.B.That’s rightC. It doesn’t matterD. I did nothing31. The first of Disneyland opened ______ July 77,1955 in Los Angeles.A. ofB. inC. onD. at32. You should try _____ mistakes when you do your homework.A. not to makeB. not makingC. not makeD. to make33. The woman asked the policeman where _____.A. the post office isB. was the post officeC. is the post officeD. the post office was34. I don’t remember ______ the book yesterday.A. where I putB. where did I putC. where will I putD. where I will put35. I’m ______ building a new zoo because I think zoos are terrible places for animals to live in.A. againstB. onC. inD. for36. It will be hard for us to get up in the morning if we _______ to bed too late.A. goB. wentC. will goD. have gone37. ---Could you tell me ______ ?--- Yes. there is one on Center Street.A. where can I buy some stampsB. when you will take your vacationC. when was the telephone inventedD. if there are any good restaurants around here38. The official said they ______ a new law to protect the tourists the next year.A. makesB. would makeC. madeD. have made39. I know ______ I promised to take you to dinner, but I won’t finish working until ten o’clock.A. thatB. ifC. whatD. whyA. alwaysB. hardlyC. alreadyD. easily41. ---Which dress do you like best, Madam?---Sorry, I can’t decide _______ now.A. to buy which oneB. buy which oneC. which one to buyD. which I should buy it42. When I walked past the park, I saw some old people ______ Chinese Taiji.A. doB. didC. doingD. are doing43. He lost his key. It made him ______ in the cold to wait for his wife’s return.A. to stayB. stayedC. staysD. stay44. ---Do you know the way to the post office?---Yes, follow me and I’ll _____ you.A. callB. pickC. showD. invite45. --- The paper says Iron Man 3 is on this evening. Let’s go and see it.--- But I ______ it.A. seeB. sawC. have seenD. will see46. ---How many students are there in your school?--- _______ the students in our school ______ over 2000.A. The number of, isB. The number of, areC. A number of, isD. A number of, are47. I always tell my students _______ on the road because it’s really dangerous.A. not to playB. to play notC. not playingD. not play二、完成句子1. I didn’t know how they __________(go) to London tomorrow.2. I __________(love) radio since I _______(be) quite young.3. We should avoid _______(make) any noise in the background.4. You will have a lot to do, ___________(include) helping look after the baby, clean the room and cook for the old man.三、汉译英。