八年级下册阅读理解
深圳市南山区桃源中学语文八年级下册阅读理解试卷
深圳市南山区桃源中学语文八年级下册阅读理解试卷一、八年级语文下册阅读理解1．阅读下面的文字，完成下列小题。
5G技术①6月6日，工信部正式向中国电信、中国移动、中国联通、中国广电发放5G商用牌照，中国的5G元年已经到来。
中国成为继美国、韩国、瑞士、英国之后，全球第五个正式开通5G服务的国家。
自此，我国的5G服务由三足鼎立正式演变为四强争霸。
②我国原本计划的5G商用牌照发放是在2020年之后，这次却提前跳过了临时牌照，直接发放正式牌照，时间足足提前了半年。
这是为什么呢？③早在2016年我国就启动了5G的实验阶段。
原本计划2016—2018年实验5G技术，在2019—2020年实验5G产品。
但是实际上，2018年9月份我国就已经完成了5G关键技术验证、5G技术方案验证和5G系统组网验证的三个阶段实验。
④此外，运营商招商也早就开始，前期工作已经准备就绪。
⑤中国信息通信研究院发布的《5G经济社会影响白皮书》指出，预计到2030年，5G 将带动中国直接经济产出6．3万亿元、经济增加值2．9万亿元、就业机会800万个；在间接贡献方面。
5G将带动总产出10．6万亿元、经济增加值3．6万亿元、就业机会1150万个。
⑥可以看出5G对我国的经济建设和就业机会增加都有十分巨大的助益。
另外，由于全球的5G发展速度非常惊人，并且美国、韩国、瑞士和英国已经开通5G服务，所以中国加快脚步，提前半年发放商用牌照也是合情合理的。
⑦公众虽然还没有接触到5G网络，但是从技术标准和架设规模来看，5G移动网络将完全颠覆现有3G/4G网络的体验，不仅网速提升到10倍以上，1Gbps的下载速度会成为常态，而且大大提升网络质量、缩短延迟，将延迟控制在几毫秒到十几毫秒的水平。
⑧不仅打手机游戏再也不用担心500ms卡顿的问题，而且视频通话、4K视频直播都不在话下。
目前我们还难以想象5G商用之后会有哪些全新的移动端娱乐、交流应用出现，但它一定会带来翻天覆地的改变，就像当初从GPRS到3G/4G的跨越一样。
八年级语文下册阅读理解检测试题解析1
八年级语文下册阅读理解检测试题解析1一、八年级语文下册阅读理解1．阅读下面的文章，完成下面小题。
父亲的手林少华①父亲病倒了。
突然之间。
脑溢血。
②急救室。
我坐在他的病床前。
他闭目合眼，昏迷不醒。
但他的手仍在动，似乎只有手是清醒的。
我握住他的手，叫了声“爸爸……”他的手明显回握了我一下。
我再叫一声，他又回握了一下。
③我低头看着我手中的他的手。
毕竟父子，他的手和我的手差不多。
④不是典型的男人的手。
手掌不宽、不厚。
手指不粗。
手背没有老人斑。
青色的血管在又白又薄的皮肤下十分清晰。
整只手暖暖的、软软的。
⑤我看着、攥着、抚摸着。
忽然察觉，我还是第一次接触父亲的手——自懂事以来的半个世纪时间里我居然从未接触过父亲的手！我感到惊愕。
事情怎么会是这个样子呢？因是父子，见面或分别固然不至于握手，但此外就没有接触的机会吗？没有，没有，是没有。
我疏远了父亲的手。
想到这里，我心疼地把父亲的一只手捧在怀里，注视着，摩挲着，眼睛随之模糊起来……⑥尽管生活工作在乡下，但父亲这双手几乎没做过农活，更没做过家务，也不会，甚至侍弄房前屋后的小菜园都不太会。
但我必须承认父亲是个很聪明也很努力的人。
父亲解放初期只念到初一就工作了，由乡供销社到县供销总社后来转到人民公社即现今的镇政府。
⑦同样这双手，却打得一手好算盘，写得一手好钢笔字和好毛笔字，写得一手好文章，下得一手好象棋。
别说十里八村，即便在整个县当时都是有些名气的。
⑧可惜他脾气不好。
同样一句话，从他口中出来往往多了棱角，尤其让领导听起来不大舒坦。
所谓手巧不如口巧，也是由于这个原因，他一辈子都没升上去。
⑨我继续搜寻记忆，搜寻父亲的手在父子感情之间留下的痕迹。
记得大学三年级那年初夏我得了急性黄疸性肝炎，住在长春偏离市中心的传染病医院里。
“文革”尚未结束，物资奇缺，连白糖都凭票供应，平时喝口糖水都不容易。
而对肝炎患者来说，糖是最基本的营养品。
⑩一天中午，我在医院病床上怅怅地躺着。
几个病友都睡了，我睡不着，想自己的病情，想耽误的课，想入党申请能否通过。
(完整版)八年级英语下学期阅读理解20篇
新目标英语八年下阅读理解20篇阅读理解1Jack is a twenty-year-old young man. Two years ago, when he finished middle school, he found work in a shop. Usually he works until ten o'clock in the evening. He is very tired when he gets home. After a quick supper he goes to bed and soon falls asleep. His grandma who lives downstairs is satisfied with (满意) him.One day, on his way home, he met Mary. They were both happy. He asked the girl to his house, she agreed happily. He bought some fruit and drinks for her. And they talked about their school, teachers, classmates and their future (未来). They talked for a long time.“Have a look at your watch, please,”said the girl. “What time is it now?”“Sorry, something is wrong with my watch,”said Jack. “Where's yours?”“I left it at home.”Jack thought for a moment and found a way. He began to stamp his foot on the floor, “Bang! Bang! Bang!”The sound woke his grandma up. The old woman shouted downstairs, “It's twelve o'clock in the night, Jack. Why are you still jumping upstai rs?”1. Jack was ________ when he finished middle school.A. sixteenB. eighteenC. twentyD. fifteen2. The old woman is satisfied with Jack because ________.A. he's her grandsonB. he's cleverC. he can keep quietD. he gets home on time3. From the story, we can know that Mary is Jack's ________.A. classmateB. colleague (同事)C. auntD. wife4. The word “stamp” in the story means ______ in Chinese.A. 盖印B. 跺C. 贴邮票D. 承认5. Jack stamped his foot on the floor in order (为了) ________.A. to wake his grandma upB. to make his grandma angryC. that his grandma was going to tell him the timeD. that his grandma was going to buy him a watch参考答案：1．B2．C3．A4．B5．C 讲解：1．第一句介绍杰克今年20岁，2年前中学毕业，故选B。
八年级英语下册阅读理解专项练习6篇(含答案)
八年级英语下册阅读理解专项练习6篇1When Mencius (孟子) was a small boy, his father died. So Mencius and his mother were quite poor. One day, Mencius returned home from school and found his mother making some cloth. It was very beautiful and expensive."How much of your book have you read today?" Mencius' mother asked him. Mencius threw down his book. "I haven't read any of it." He replied, "I played with some friends of mine in the fields."When his mother heard this, she picked up a pair of scissors (剪刀) and cut the cloth. "Why have you cut your cloth?" Mencius asked, "It was so beautiful and now you've wasted it." "You have wasted your time," she said, "Now I have wasted mine. Look at the terrible (可怕的) thing we have done!"Mencius learned a lot from this lesson. After this, he always studied hard.1. When did the story happen?A. When Mencius was 30 years old.B. When Mencius' family was very rich.C. When Mencius' father lived with them.D. When Mencius was a small boy.2. The phrase "make some cloth" means "______".A. 做衣服B. 织布C. 纺棉花D. 缝衣服3. Why did Mencius' mother cut the cloth? Because ______.A. She wanted to make some more beautiful clothB. She thought it was wasting time to make clothC. She wanted to let her son get angryD. She wanted to give her son a lesson4. Why did Mencius always study hard after this? Because ______.A. he wanted to be a teacherB. he learned a lot from the lessonC. he wanted to make his mother happyD. he didn't play with any other friends5. This passage mainly tells ______.A. A story of Mencius and his friendsB. a story of Mencius' motherC. a story about Mencius' wasting timeD. Mencius' mother cut the cloth答案：DBDBC2One day, a teacher was giving a speech to his students. He held up (举起) a glass of water and asked the class, "How heavy do you think this glass of water is?"The students' answers ranged from 20 g to 500 g? "It does not matter on the weight itself. It depends on how long you hold it. If I hold it for a minute, it is OK. If I hold it for an hour, I will have an ache in my right arm. If I hold it for a day, you will have to call an ambulance (救护车). It is exactly the same weight, but the longer I hold it, the heavier it becomes."If we carry our burdens (负担) all the time, sooner or later, we will not be able to carry on, the burden becoming increasingly heavier."What you have to do is to put the glass down, rest for a while before holding it up again."We have to put down the burden sometimes, so that we can be refreshed and are able to carry on.So before you return home from work tonight, put the burden of work down. Don't carry it back home. You can pick it up tomorrow.Whatever burdens you are having now on your shoulders, let it down for a moment if you can.1. The teacher brought a glass of water to the class because _____.A. he was very thirstyB. his arms were strongC. it was a good example2. "A glass of water" in this passage referred to (指) _____.A. knowledgeB. the burdenC. the time3. According to the teacher, you may feel _____ if you put down the burden sometimes.A. more energeticB. much heavierC. more stressed out4. This was a lesson about _____.A. how to relax oneself in lifeB. how to solve a physics problemC. how to keep fit by drinking water5. Which of the following statements is TRUE according to the passage?A. You could become heavier and heavier if you held a glass of water in your hand.B. All the students in the class knew what the weight of the glass of water exactly was.C. The teacher had a good way of making his lesson clear and easy to be understood答案：CBCAC3Years ago, a college teacher gave a group of graduate (毕业) students this job: Go to a poor place. Take 200 boys, between the ages of 12 and 16, and find out their living environment. The predict their chances for the future.After doing some research, the students found that 90% of the boys would spend some time in jail (监狱). Twenty-five years later, another group of students was given the job: Go to test what the first group of students had predicted. They went back to the same place. These 200 boys had then become men. Some of them were still there, a few had died and some had moved away. The students found that only four of them had ever been sent tot jail.These men had lived in a place full of crime (犯罪, 罪行) for many years. Why did the have such a good record? When the students asked the reason, the men said," Well, there was a teacher…?The students found the teacher. What did she do to these boys? Could she give the students any reason why these boys should have remembered her?"No," she said, "no, I really couldn't give any reason."And then, thinking back over the years, she said happily, " I loved those boys…?1. The first group of the students took _____ boys to help them to do their job.A. 12B. 16C. 90D. 2002. The underlined word "predict" in the passage most probably means "_____" in Chinese.A. 证明B. 预测C. 提供D. 证明3. Which of the following is not true?A. Four of the boys had been sent to jail.B. The 200 boys were between 12 and 16.C. The woman teacher could not give any reason at last.D. The children lived I a place which was full of crime4. What's the main idea of this passage?A. Predicting never worksB. Teacher's love can change children's lifeC. Two hundred boys were tested by studentsD. The two groups of students could predict the boys' future答案：DBCB4The hardworking blacksmith Jones used to work all day in his shop and so hard-working was he that at times he would make the sparks (火星) fly from his hammer.The son of Mr. Smith, a rich neighbor, used to come to see the blacksmith every day and for hours and hours he would enjoy himself watching how the tradesman worked.“Young man, why don’t you try your hand to learn to make shoe tacks (钉), even if it is only to pass the time?” said the blacksmith. “Who knows, one day, it may be of use to you.”The lazy boy began to see what he could do. But after a little practice he found that he was becoming very skilled and soon he was making some of the finest tacks.Old Mr. Smith died and the son on account of the war lost all his goods. He had to leave home and wasforced to live in another country. It so happened that in this village there were many shoemakers who were spending a lot of money buying tacks for their shoes and even at times when they paid high prices they were not always able to get what they wanted, because in that part of the country there was a high demand for soldiers’ shoes.Our young Mr. Smith, who was finding it difficult to earn his daily bread, remembered that once upon a time he had learned the art of making tacks and had the sudden idea of making a bargain with the shoemakers. He told them that he would make the tacks if they would help to get him settled in the workshop. The shoemakers were only too glad of the offer. And after a while, Mr. Smith found that he was soon making the finest tacks in the village.“How funny it seems,” he used to say, “even making tacks can make money. My trade is more useful to me than all my former riches.”1.The young man learnt to make shoe tacks because ________.A. his father told him toB. he wanted to learn a skillC. Jones encouraged him toD. he just wanted to pass his time2. Which of the following is TRUE according to the passage?A. Old Mr. Smith enjoyed making the shoe tacks.B. The blacksmith had predicted the young man would be in need of the skill.C. The higher prices they paid, the more tacks the shoemakers would get.D. The young man earned his living by his skills learnt when he was young.3. What can we learn from the story?A. Practice makes perfect.B. Skill makes life easy.C. A good beginning makes a good ending.D. Every man has his gift.答案：CDB5In the early days of human history, people survived by hunting wild animals, or gathering wild grains and plants for food. Then, some people learned to grow crops and raise animals for food. They were the first farmers.From the sixteenth century on, the word “farm” has meant agricultural land. But a much older meaning of the word “farm” is linked to economics. The word “farm” comes from the Latin word “firma”, which means an unchanging payment. E xperts say the earliest meaning of the English word “farm” was a yearly payment made as a tax or rent.Farmers in early England did not own their land. They paid every year to use agricultural lands. In England, farmers used hawthorn trees along the edges of houses. They called this row of hawthorns a hedge. Hedging fields was how careful farmers marked and protected them. Soon, people began to use the word “hedging” to describe steps that could be taken to protect against financial loss. Hedging is common among gamblers who make large bets. A gambler bets a lot of money on one team. But, to be on the safe side, he also places a smaller bet on the other team, to reduce a possible loss.You might say that someone is hedging his bet when he invests in several different kinds of business. One business may fail, but likely not all. Farmers know that it is necessary to make hay while the sun shines. Hay has to be cut and gathered when it is dry. So a wise farmer never postpones gathering his hay when the sun is shining. Rain may soon appear. A wise person copies the farmer. He works when conditions are right.1.We can know from the 3rd paragraph that farmers in early England _________.A. had land of their ownB. paid to use hawthorn trees every yearC. used hedging fieldsD. often suffered from financial loss2.Which of the following is wise?A. A mother tries to sleep as soon as her baby is quietB. Hay has to be cut and gathered before it is dryC. Put off gathering hay when the sun is shiningD. Gather hay as it is rainy3.If a boy is carefully listening to his teacher in class, he learns to _________.A. become a wise farmerB. hedge his betC. gather his hayD. make hay while the sun shines答案：CAD6My grandfather is eighty years old. He always complains about how fast things have changed, and he often says that life used to be better."Families aren't what they used to be. A lot of families have broken up. If the husband and wife have problems with their marriage, they no longer stay together. And mothers used to stay at home and take care of their children, but now parents are both busy working. No one has time to look after children at home.And the cars! No one walks anymore. More and more people drive. We used to walk five miles to school on school days, even in winter. But now we don't. And in school, children don't have to think anymore. In math class, for example, we used to add, subtract, multiply and divide by using our heads. But now kids don't use their heads anymore. Instead, they use calculators.Most families have computers now. In the past we didn't have computers. We didn't even have lights. My mother used to spend all day cooking in the kitchen. But now we don't often eat home-cooked food.And people talk less to each other than before. They are too busy to talk, too busy to eat, too busy to think...Life used to be simple, but it isn't anymore."1. What does the grandfather think of the life now?A. It's as good as it used to beB. It's worse than it used to beC. It's better than it used to beD. It's the same as it used to be2. What does the underlined word "marriage" mean in Chinese?A. 生活B. 工作C. 婚姻D. 家庭3. What did the grandfather used to do?A. He used to use calculators in math classB. He used to drive to school in winterC. He used to go to school by bikeD. He used to walk five miles to school4. What changes have happened?①There are lights at home②People often eat home-cooked food now③Lots of families have computers④More and more people drive instead of walkingA. ①②④B. ②③④C. ①②③D. ①③④5. Which of the following is TURE?A. Life now is much simplerB. People have more time to talk with each other nowC. The grandfather only complains and pays no attention to the better life nowD. Lots of mothers still stay at home and look after their children.答案：BCCDC。
八年级下册阅读理解语文综合试题带答案
八年级下册阅读理解语文综合试题带答案一、八年级语文下册阅读理解1．文学作品阅读老赛与瓦子蔡楠①这个夏季的傍晚，每当白洋淀上的太阳没入莽莽苍苍的芦苇尽头，一群瓦子（方言，学名“须浮鸥”）就互相招呼着飞到老赛的农家院休闲岛。
瓦子先是在他养蟹池的上空像海鸥一样振翅飞翔一番，接着就在农家院环场一周，飞过菜园，飞过草莓园，飞过果园，飞到点菜的食客面前“哦——哦——”长叫一阵，然后，就飞到休闲岛厨房后窗口对面的核桃树上歇了，唧唧短叫。
瓦子们知道老赛在厨房里在给客人炒菜。
瓦子们还知道，一旦老赛发现它们来了，就会把手里的活计交给一旁的儿子，然后顾不得洗手，就会跑出来和它们相聚。
②那真是人鸟一天内最快乐的时刻。
老赛光着黝黑的膀子，晃着一身的肌肉提着一把铁锨，朝一口大铁锅走去。
他掀开锅盖，用铁锨将锅内早就准备好的饲料搅和均匀，铲出一铁锨，向核桃树下扬去，然后又是一铁锨……饲料就被老赛扬成了一张又一张的网，散落在核桃树下。
A瓦子们翅膀铺展开，哗地从树上落下，带着一阵风，扑向了饲料，然后又收拢翅膀，伸出尖尖细细的长嘴，啄出了一地的“音乐”。
（批注：________）老赛听着“音乐”，扶着铁锨，望着鸟们愣神。
愣神间，发现一只瓦子被挤出了啄食的“音乐”圈儿。
他近前一看，是一只翅膀受了伤的瓦子。
别的瓦子都长着淡紫色的嘴，而这只瓦子的嘴却是醒目的红。
红嘴儿瓦子抢不上食物，望着老赛沙哑地低鸣。
老赛就进了厨房，端来了满满一碗小河虾，送到了那只受伤的瓦子面前……③本来老赛的农家院就是在千里堤上的，只是后来搬到了淀里。
按他儿子赛舟的话说，这叫人挪死，院挪活。
儿子整个春天都没闲着。
他在老赛承包的五亩苇地上大兴土木。
刨了苇根，挖了一个大池子，筑土为台。
池子里蓄水养蟹，台子上搭起了一排钢结构板房，建起了淀上农家院休闲岛，有吃有住有玩儿的。
院子里种了蔬菜，种了果树，种了草莓，美其名曰采摘园。
休闲岛与千里堤有一道壕沟相隔，儿子空出十只柴油桶，上面焊上一块厚厚的钢板和护栏，中间设计两条长长的锁链，一个轮渡就制成了。
八年级下学期期末复习阅读理解语文检测试卷附答案
八年级下学期期末复习阅读理解语文检测试卷附答案一、八年级语文下册阅读理解1．阅读文章，回答下列各题。
鉴赏家汪曾祺全县第一个大画家是季陶民，第一个鉴赏家是叶三。
叶三是个卖果子的。
他专给大宅门送果子。
到了什么节令送什么果子都是一定的。
他的果子不用挑，个个都是好的。
他的果子都是原装。
四乡八镇，哪个园子里，什么人家，有一棵出名的好果树，他都知道，而且和园主打了多年交道，熟得像亲家一样了……立春前后，卖青萝卜。
“棒打萝卜”，摔在地下就裂开了。
杏子、桃子下来时卖鸡蛋大的香白杏，白得一团雪，只嘴儿以下有一根红线的“一线红”蜜桃。
再下来是樱桃，红的像珊瑚，白的像玛瑙。
端午前后，枇杷。
夏天卖瓜。
七八月卖河鲜：鲜菱、鸡头、莲蓬、花下藕。
卖马牙枣、卖葡萄。
重阳近了，卖梨：河间府的鸭梨、莱阳的半斤酥，还有一种叫做“黄金坠儿”的香气扑人个儿不大的甜梨。
菊花开过了，卖金橘，卖蒂部起脐子的福州蜜橘。
入冬以后，卖栗子、卖山药（粗如小儿臂）、卖百合（大如拳）、卖碧绿生鲜的檀香橄榄。
他还卖佛手、香橼。
人家买去，配架装盘，书斋清供，闻香观赏。
不少深居简出的人，是看到叶三送来的果子，才想起现在是什么节令了的。
叶三五十岁整生日，老大老二都提出爹不要走宅门卖果子了，他们养得起他。
叶三有点生气了：“嫌我给你们丢人？我给这些人家送惯了果子。
就为了季四太爷一个人，我也得卖果子。
”季四太爷即季陶民。
他大排行是老四，城里人都称之为四太爷。
叶三真是为了季陶民一个人卖果子的。
他给别人家送果子是为了挣钱，他给季陶民送果子是为了爱他的画。
季陶民有一个脾气，画一张画要喝二斤花雕，吃半斤水果。
叶三搜罗到最好的水果，总是首先给季陶民送去。
季陶民每天一起来就走进他的小书房﹣﹣画室。
叶三不须通报，一来就是半天。
季陶民画的时候，他站在旁边很入神地看，专心致意，连大气都不出。
有时看到精彩处，就情不自禁地深深吸一口气，甚至小声地惊呼起来。
凡是叶三吸气、惊呼的地方，也正是季陶民的得意之笔。
人教版英语八年级英语下册阅读理解
人教版英语八年级英语下册阅读理解一、八年级英语下册阅读理解专项练习（含答案解析）1．语法填空China has a very long history. It has many great traditional skills that have a wide influence（影响）. Here we mainly talk about kites.The earliest mention of a kite in ancient China dates back to the 5th century BC. It was made of wood and used as a rescue signal（求救信号）.At the time between 770 and 221 BC, Chinese kites were actually called "muyuan". They were first invented in Shandong Province for military purposes（军事目的）. The kites were used to send important messages during the Chu-Han War（206—202 BC）. During the Tang Dynasty （618—907 AD）, kites were made of lighter materials, such as bamboo, silk and paper. At that time, people began to fly kites for other purposes. It was believed that letting go of the kite could remove bad luck and illness.Today, kite-flying is an interesting and healthy activity in China. There are large kite-flying festivals held throughout the country, and kite makers can show off their skills during the festivals.（1）A kite was first mentioned in ancient China .A. in the 5th century BCB. two thousand years agoC. one thousand years agoD. in the 4th century BC（2）Between 770 and 221 BC, .A. kites had a wide influenceB. kites were used as a rescue signalC. kites were used to send family lettersD. kites were invented for military purposes（3）What does the last paragraph mainly talk about?A. Kite-flying is very popular in China today.B. Kite-flying is a good way to show off skills.C. Kite-flying has a very long history.D. Kite-flying can help people keep fit.（4）According to the passage, we can say that .A. it is very easy to fly a kiteB. in order to have good luck, we must fly a kiteC. kites have become lighter since the Tang DynastyD. in order to keep healthy, we must fly a kite every day【答案】（1）A（2）D（3）A（4）C【解析】【分析】本文主要讲述了风筝在中国从古至今的发展过程。
八年级语文下学期阅读理解试题带答案
八年级语文下学期阅读理解试题带答案一、八年级语文下册阅读理解1．阅读下面选文，完成下列小题。
谁偷了我们的wif信号陈博翰①在这个信息时代，网速太差或者突然断网，无疑让人很沮丧。
更令人气恼的是，wifi 不好这种事，还每天都在发生。
那么，究竟是什么影响了我们的网速呢？②在许多盛大节日里，人们总爱在屋子里装饰上彩灯，来增添节日的欢乐气氛。
比如，圣诞节时，人们会在圣诞树上悬挂一串串小彩灯。
而在中国新年到来的时候，许多人也习惯在家里布置上五颜六色的小灯。
这个时候，家中wifi第一大盗就出现了，它们就是彩灯。
英国宽带服务提供商Talk Talk公司研究发现，彩灯会影响网速，而且这一影响还高达25%。
据估计，大约有600万英国人被家里缓慢的网速折磨的痛苦不堪，而电子设备的干扰，特别是来自节庆时彩灯的影响就是罪魁祸首。
③我们知道，任何用电的东西都会产生一个电磁场——这是一种看不见的电子颗粒云。
如果磁场足够大，就会干扰wifi网络中用到的无线电波。
所以，电线或者电灯都会干扰wifi。
这其中，彩灯的影响更大。
因为彩灯有很多的电线和电管，这些漂亮的小彩灯们，被人们装饰在门廊上，圣诞树上，它们的电线就在房间里产生了一个很大的磁场，而且不像其他的电子设备，由于人们一开彩灯就会开一整晚，这时，这个磁场对网络的影响会更持久。
④不仅是灯光，厨房里的家电也会扰乱我们的网速。
WiFi发出的电磁波遇到金属材料后，一部分会被反射回去，所以，在金属后面的设备会接收到很弱的信号，如果你将WiFi 设备放置在金属材质覆盖的环境中，WiFi信号甚至会被屏蔽。
所以，我们家中的冰箱、烤炉、洗衣机等障碍物都会影响信号的传输。
在厨房里，最大的干扰还是来自于微波炉传出的无线电波。
这是因为，无线网络是一个高频的无线电信号，使用的是2．4GHz附近的频段，而微波炉的工作频率也包含2．4GHz这个频段，微波炉加热就靠水分子吸收这个波段的能量共振。
这也就意味着，当你用微波炉时，你的网络可能会被微波炉吸走去帮助你加热饭菜。
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八年级下册阅读理解“七选五”练习题根据短文内容，从所给选项中选出能填入空白处的最佳选项。
有两项是多余的。
A1If you‟re having trouble getting good sleep through the night , this text will tell you what you can do to have a good night‟s sleep .1. Get on schedule. 2 Changing your sleeping time dy more than an hour can affect( 影响) your sleep quality ( 质量) In other words , sudden change sleeping time will affect your “ biological clock ” .2. 3 Wait at least three hours after dinner before going to sleep . Digestion( 消化) slows down while asleep , and a full stomach may affect sleep . Similarly , you should not go to bed on an empty stomach , as an empty stomach may also have a bad affect on your sleep .3. Keep the room as dark as possible . Turn your light off , or use a very dim (昏暗的) night light . Try to avoid (避免) all sources( 源) of light 4 .4 .5 You may think that it‟s impossible to control what position you sleep in when you asleep ,but it‟s possible and it can make a difference . If you wake up in the middle of the night , make an effort to have a comfortable position .A . Change your sleeping position .B . They include windows , LED clocks , computer lights and so on .C . How to make a plan for your night‟s sleep .D . Be mindful of what you eat or drink before bed .E . Take notes of what you see around .F . Go to bed at the same time every night .G . How to Sleep Better .B1 One day , his teacher asked him to write about what he wanted to be and do when he grew up . He put all his heart into it and wrote a seven-page composition , saying that some day he‟d own a hore ranch (牧场) . He even drew a beautiful picture of big ranch with all the buildings .The next day he handed it in to his teacher . 2 On the front page was a large red “ F ” with a note that read , “ See me after class .” After class , the boy went to see the teacher and asked , “ Why did I receive an …F ‟？” The teacher said , “ This is an unrealistic (不现实的) dream for a young boy like you . Your family is not rich .3 .You have to buy the land . You have to pay for other things .There is no way you could ever do it .” Then the teacher asked him to rewrite his composition with a more realistic goal .The boy went home and thought about it long and hard . 4 His father said , “ Look , son , you have to make up your own mind on this . But I think it is a very important decision for you .”Finally , after thinking about it for several days , the boy handed in the same paper , making no changes at all .He said to the teacher ,“ 5 ”A . Monty worked so hard that everybody was deeply moved .B . Monty was a student of Grade 9 .C . Having a horse ranch needs a lot of money .D . You can keep the …F ‟, but I‟ll keep my dream .E . It‟s very kind of you to give me helpful advice .F . He asked his father what he should do .G . Two days later he received his paper back .CDo some color and make you feel calm while others give you energy ? Scientists have studied the connection color and mood ( 心情) for a long time . 1 Warm , bright colors such as yellow and red are positive (积极的) colors . 2 Cool colors such as blue , purple , and green are relaxing colors . They help people experience calm feeling . Many public places are decorated ( 装饰) with certain color in order to create certain moods . Orange makes people feel hungry . 3 People use color in their homes to create moods as well .Blue is a peaceful color . It helps you rest , so it is a very good color for a bedroom . 4 Some types of blue make people feel sad . Red can make people feel angry .What is your mood right now ? 5 Does it match your mood ?A.Life is like a beautiful picture , full of different colors .B.They find that color can influence ( 影响) our moods .C.Now , look at the color of the walls around you .D.So many restaurants are painted in this color .E.You‟d better paint your bedroom in the color you like .F.They can give people a pleasant feeling .G.However , colors can create bad moods , too .DInternet has become part of our life . Here are some easy steps for you to stay safe on the Internet . 1 Never give out your full name , address abd phone number unless it is a safe site .Protect your money . Do not give out your card information unless it is a secure site . You can tell if the site is safe by looking at the lower part of your screen (屏幕) .2 If it is locked , the site is secure .Don’t believe “ Get Rich Quick ! ” If you get an e-mail that says you can make thousands of dollars in a few days , it isn‟t true . Most likely it will cost you in the end . 3 .A good virus scan( 杀毒软件) . Update (更新) your virus scan . 4 When you buy a virus scan , it may have been on the shelves for months , so you have to update it often .5 Do not open e-mail attachments (附件) that are programs (程序) . Receiving these programs in e-mail is harmless , but opening and running them can bedangerous .A . There is a small lock .B . Stay away from these offers !C . New viruses come out daily .D. There are always some unsafe sites .E . Keep your main e-mail address private .F . Don‟t give out personal information .G . Protect yourself from dangerous e-mail .E1 Now , let me tell you some ways to improve your memory (记忆力)My first advice is that if you want to remember something well , you have to go over it regularly ( 有规律地) . You might review the material two days after you learn it , then a week later , then two week later , and then a month later . 2 My second advice is to use a colored pen to highlight ( 标注) the important parts in your book . 3 When you open your book , the colored parts will show you the key points quickly .4 Review (复习) all the information in your mind right before you go to sleep . Your brain is working while you are sleeping .If you think about the information before you go to sleep ,you might be able to remember it better . Another good time for remembering information is in the morning . 5A. Another piece of advice is to use the proper time well .B . It‟s a good idea to copy all the information down .C . After a month you will find that you can easily remember the material .D . You have just had a good rest and your brain is fresh and clear .E . Enough sleep is very important for people‟s health .F. Many people find it difficult to remember things .G .It will help you pay attention to the most important parts .。