浙江省新高考研究卷 (4)

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2019年1月《浙江省新高考研究卷》数学 四 试题

2019年1月《浙江省新高考研究卷》数学 四 试题


《浙江省新高考研究卷》数学(四)第 2 页 共 4 页
三、解答题:本大题共 5 个题,共 74 分,解答应写出文字说明、证明过程或演算步骤. 18. (本小题满分 14 分)已知函数 f ( x ) sin( x ) cos( x ) cos( x ) sin( x ) ①求函数 f ( x ) 的单调增区间
3 2 2 3 10.已知函数 f ( x ) x x a ln x ,若关于 x 的不等式 f ( x ) 0, (a R ) 在 R 上恒成立,则实数 a
的取值范围是 A. 1, B. 0,1 C. , 1 D. ,1
A.
3
B.
3
C.
2
D.
名校联盟★《新高考研究卷》 2019 年 1 月卷
《浙江省新高考研究卷》数学(四)
本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分共 150 分,考试时间为 120 分钟.
第Ⅰ卷 (选择题
共 40 分)
一、选择题:本大题共 10 小题,每小题 4 分,共 40 分。在每小题给出的四个选项中,只有一项是 符合题目要求的。 1.设全集 U R ,集合 M x A.
4 3 x 2 ax b t , (t 0), x 0,
C.
2 1 2
2 3 成立,则 t 3
D. 2 2 2
《浙江省新高考研究卷》数学(四)第 1 页 共 4 页
9.正四面体 ABCD ,其中 CD 平面 ,当正四面体 ABCD 在平面 内的投影最大时,面 ABC 与平 面 所成的角的余弦值为

▲ ▲ ,
15. 已知 x 5 ( x 1)17 a 0 a1x a 2 x 2 a 21x12 a 22 x 22 ,则实数 a 7

浙江新高考研究卷创新卷数学(4)

浙江新高考研究卷创新卷数学(4)

《浙江省新高考研究卷》数学(四)第 4 页 共 4 页
到 l 的距离 d =| PA | ,则“ m = p ”是“ n = p ”的
2
2
A.充分不必要条件
B.必要不充分条件
C.充分必要条件
D.既不充分也不必要条件
6.已知随机变量 X 的分布列如右,其中 a,b 0 , DX 的取值范围
A. (0,1) C. (1 , 2)
2
B. (0, 1) 2
D. (0, 2)
名校联盟★《新高考研究卷》 2020 年 2 月卷
《浙江省新高考研究卷》数学(四)
第Ⅰ卷 (选择题 共 40 分)
一、选择题:本大题共 10 小题,每小题 4 分,共 40 分.在每小题给出的四个选项中,只有一项是
符合题目要求的.
1.已知U = R, A = x | x −1 , B = x |1 x 2 ,则 (CU A) (CU B) =
D
DCB = 120 , AC =1, BC = 2, AE = 2 , BCDE 是菱形.
(Ⅰ)求证:平面 ABE ⊥ 平面 ABC ; (Ⅱ)求 AD 与平面 BCDE 所成角的正弦.
E
C
B
A 第 19 题图
20.(本题满分 15 分)数列 an 的前 n 项和为 Sn , n N*,满足 Sn = 1 − an ,设 bn = 2(Sn + an+1) ,数
二、填空题:本大题共 7 小题,多空题每小题 6 分,单空题每小题 4 分,共 36 分.
11.已知 i 为虚数单位, z = 2 + i ,则 | z |= 2−i
z+1= ▲ . z
12.一个几何体三视图如图,则它的体积

浙江省新高考研究卷2022语文四

浙江省新高考研究卷2022语文四

浙江省新高考研究卷2022语文四1、下列词语中,加着重号字的注音正确的一项是()[单选题] *A、告辞(cí)菱角(léng)B、柔滑(róu)精致(zhì)(正确答案)D、晌午(shàng)吮吸(yǔn)下列词语中,加着重号字的注音不正确的一项是()[单选题] *2、1《窦娥冤》是我国元代著名戏曲家关汉卿的代表作。

[判断题] *对(正确答案)错3、1莫言是中国首位获得诺贝尔奖的作家,他借助《卖白菜》中母亲的形象,表达了自己对做人行事的看法:再穷也不能失掉志气,再穷也不能丢掉真诚。

[判断题] *对(正确答案)错4、18.下列词语中加点字注音完全正确的一项是()[单选题] *A.绰号(chuò)亘古(gèng)粗犷(guǎng)藏污纳垢(gòu)B.坍塌(tān)蛮横(hèng)荣膺(yīng)自惭形秽(huì)(正确答案)C.柠檬(ling)滞留(zhi)驰骋(chéng)怒不可遏(é)D.虬枝(qiú)簇新(chù)倜傥(tǎng)悲天悯人(mǐn)5、1《劝学》的作者是荀子,名况,字卿,是我国春秋时期著名的思想家、教育家,先秦儒家最后的代表,朴素唯物主义思想的集大成者。

[判断题] *对(正确答案)错6、7. 下列句子中没有语病的一项是()[单选题] *A.在全国文明城市创建活动中,全市人民参与程度的高低和创建力度的大小是成功的关键。

B.近年来,我国的教育界同仁就如何培养学生情商的问题公布了许多有益的见解。

C.由于电影《长津湖》讲述了一个志愿军奋勇杀敌的感人故事,让人不禁潸然泪下。

D.袁隆平爷爷成功研究出杂交水稻,为我国农业发展和世界粮食供给做出杰出贡献。

(正确答案)7、1“看万山红遍,层林尽染,漫江碧透,百舸争流。

鹰击长空,鱼翔浅底,万类霜天竞自由。

”这句话与原文一致。

浙江新高考研究卷创新卷物理答案(1-5卷)

浙江新高考研究卷创新卷物理答案(1-5卷)

名校联盟★《新高考创新卷》 2020年2月《浙江省名校联盟新高考创新卷》选考物理参考答案(一)一、选择题Ⅰ(本题共13小题,每小题3分,共39分。

在每小题列出的四个备选项中只有一个是符合题目要求的,不选、多选、错选均不得分)题号 1 2 3 4 5 6 7 8 9 10 11 12 13 答案ACABABCDCBDDC二、选择题Ⅱ(本题共3小题,每小题2分,共6分。

每小题列出的四个备选项中至少有一个是符合题目要求的。

全部选对的得2分,选对但不全的得1分,有选错的得0分)题号 14 15 16 答案BDACDAC三、非选择题(本题共6小题,共55分) 17.(7分) (1)(1分)B (2)(2分)①打点计时器类型选择错误 ②手持纸带位置错误 ③打点计时器安装过低(答对其中一处即可) (3)(1分)刻度尺 (4)(1分)8.78—8.80 (5)(2分)1.30±0.02 18.(7分)(1)连线2分1.48(1分) 0.65 到0.70 都可以(1分) (2)④⑤或③⑤均可以(1分) (3)A (2分)+- 3A0.6A 3V 15V①② ③④⑦192021.(10分)(1)电源电动势 E =Blv =10V电阻R 与r 2并联,总电阻R 总=6Ω E I R =总F 安=BIl =5N 3(2)金属杆a 通过EFGH 区域:22=B l v t m v R −∆∆总2m/s v ∆= v 1=8m/s 1v t d ∆=金属杆a 通过与弹簧碰撞以v =8m/s 反弹,经过EFGH 区域速度再减掉2m/s ,变成 v 2=6m/s金属杆a 、b 发生弹性碰撞,满足: 动量守恒:2a b mv mv mv =+能量守恒:2222111222a b mv mv mv =+求得金属杆b 的速度为6m/s b v =金属杆b 通过ABCD 区域,电路发生改变=8R 'Ω总: 22=B l vt m v R '−∆∆'总 4m/s v '∆= 2m/s bv '= 2v t d ∆=金属杆a 切割产生的总焦耳热2210211=3.2J 22Q mv mv =− 金属杆a 分配到1.6J金属杆b 切割产生的总焦耳热22211 1.6J 22b bQ mv mv '=−= 金属杆a 分配到4J 15a Q =总共产生了1.87J 的热(3)金属杆b 进入左侧电容区域,最终金属杆b 两端电压和电容器两端电压相等时,匀速。

浙江新高考研究卷创新卷技术(4)

浙江新高考研究卷创新卷技术(4)

A.1 或 2
B.2 或 3
C.3 或 4
D.4 或 5
《浙江省新高考创新卷》技术(四) 第 3 页 共 16 页
二、非选择题(本大题共 4 小题,其中第 13 小题 4 分,第 14 小题 8 分,第 15 小题 7 分,第 16 小 题 7 分,共 26 分)
13.杭州市某区 2020 年面向社会招聘教师入围人员名单,并用 Excel 软件进行数据处理,如图所示。
致数据丢失 5.使用 GoldWave 软件编辑某音频文件,部分界面如下
图所示:
《浙江省新高考创新卷》技术(四) 第 1 页 共 16 页
下列说法正确的是
A.执行“静音”操作,左声道最后 5 秒钟是静音
B.执行“删除”操作并按原参数保存,音频文件存储容量变小
C.将“保存选定部分为”操作,参数默认,则音频文件大小约为 430KB
A.int(Rnd*90+10)
B.int(Rnd*13)*7+14
C.int(Rnd*84)+14
D.int(Rnd*86)+14
8.某算法的部分流程图如右图所示,执行该
流程图后,s 的值为
A.27
B.63
C.48
D.36
9.“A”的 ASCII 码值为 65,有如下 VB 程序段:
s1=text1.text
(1)总成绩是将“笔试成绩”与“面试成绩”分别乘以对应的权重后相加所得。通过 F3 单元格 中的公式,对 F4:F8 进行自动填充,F4 单元格中显示结果是 ▲ (单选,填字母:A.# VALUE!/B.85.00/C.0.00 /D.#DIV/0!)。
(2)若要正确计算“总成绩”列的数据,可对 F3 单元格中的公式进行修改,并对 F4:F44 进行 自动填充,则 F3 单元格中的公式是 ▲ 。

浙江新高考研究卷创新卷生物(4)

浙江新高考研究卷创新卷生物(4)

名校联盟★《新高考创新卷》 2020年2月《浙江省名校联盟新高考创新卷》选考生物(四)选择题部分一、选择题(本大题共25小题,每小题2分,共50分。

每小题列出的四个备选项中只有一个符合题目要求的,不选、多选、错选均不得分)1.下列关于人类与环境的叙述,错误的是A.深海地壳热裂口的生物其能源来自地热和硫化氢的氧化B.温室效应使地球表面的热逸散增加,俘获热减少C.臭氧减少能使农作物和水产品的产量均减少D.水土流失的冲积物是引起水体污染的污染物2.下列关于细胞结构和功能的叙述,正确的是A.构成内质网的囊腔和细管连成一个整体B.粗面内质网上的核糖体合成的蛋白质均运输到高尔基体C.溶酶体是所有植物细胞消化细胞内碎渣的重要场所D.刚分裂形成的植物细胞有很多个分散的小液泡3.下列关于“肺炎双球菌离体转化实验”和“噬菌体侵染细菌实验”的叙述中,正确的是A.实验的对照方法均只采用相互对照B.实验均能证明蛋白质不是遗传物质C.“肺炎双球菌离体转化实验”中用到了液体和固体培养基对细菌进行培养D.“噬菌体侵染细菌实验”中,若32P标记组的上清液出现少量32P的原因是搅拌不充分引起4.下图是细胞膜的亚显微结构模式图,①~③表示构成细胞膜的结构,下列叙述错误的是A.组成结构③的物质中含有甘油基团B.结构②不可能起着生物催化剂的作用C.结构③也具有选择透性D.在效应细胞毒性T细胞中,结构①可能会识别抗原-MHC复合体5.下列关于“α−淀粉酶的固定化及淀粉水解作用的检测”实验的叙述,错误的是A.淀粉溶液过柱时控制流速,是为了使底物在反应柱中反应充分B.洗涤反应柱时控制流速,是为了防止洗去已固定的α−淀粉酶C.本实验中的α−淀粉酶从枯草杆菌中提取且相对较耐高温D.洗涤后的反应柱应高温灭菌后保存,避免微生物分解反应柱中的酶6.下列有关生物组织中有机物的检测实验的叙述,错误的是A.“检测生物组织中的油脂”实验,选择了多种植物的种子做实验材料B.苏丹Ⅲ染液的染料分子可以进入活细胞中C.不是所有的糖都可以用本尼迪特试剂鉴定D.向蛋清液中先加入适量双缩脲试剂A液,然后再加入等量的双缩脲试剂B液7.右图表示人体某致病基因控制异常多肽链合成的过程。

浙江省名校联盟新高考研究卷2023-2024学年高三上学期选考地理(四)试题含解析

浙江省名校联盟新高考研究卷2023-2024学年高三上学期选考地理(四)试题含解析

名校联盟★《新高考研究卷》2023年9月《浙江省新高考研究卷》选考地理(四)选择题部分(答案在最后)一、选择题Ⅰ(本大题共20小题,每小题2分,共40分。

每小题列出的四个备选项中只有一个是符合题目要求的,不选、多选、错选均不得分)Q公司是一家从事汽车生产的行业龙头企业,其总部及最大生产基地位于安徽芜湖。

公司集聚了上下游企业1000多家,形成了长三角区域最完整的汽车产业链体系。

近期该公司宣布,将斥资4亿美元在阿根廷投资建厂,目标在2030年底实现年产10万辆汽车。

完成下面小题。

1.1000多家汽车上下游企业在芜湖集聚,主要有利于这些企业()A.减小竞争压力B.提高协作效率C.增加产品类型D.降低能源能耗2.该公司在阿根廷投资建厂主要是因为该国()A.劳动力丰富廉价B.能源储量丰富C.科技发展水平高D.市场潜力较大【答案】1.B 2.D【解析】【1题详解】根据材料“Q公司集聚了上下游企业1000多家,形成长三角区域最完整的汽车产业链体”可知,这些企业集聚在Q公司,主要是因为该地工业协作条件好,有利于这些企业提高协作效率,提高竞争力,B正确;企业的集聚会加大竞争压力,A错误;企业集聚对产品类型影响不大,C错误;企业集聚可以降低运输成本和生产能耗,但这不是集聚的主要目的,D错误。

故选B。

【2题详解】因阿根廷市场潜力较大,该公司在阿根廷投资建厂,可以扩大其消费市场,获得更多的经济效益,D正确;目前汽车生产智能化、自动化程度较高,劳动力成本不是主要影响因素,且中国人口较多,劳动力更为丰富,A错误;阿根廷石油和天然气储量较丰富,但汽车生产对油气资源依赖程度较低,不是投资建厂的主要原因,B错误;阿根廷科技发展水平位于拉美前列,但目前中国汽车产业的科技水平较高,C错误。

故选D。

【点睛】有工序联系、空间联系或信息联系的相关工业会出现工业集聚。

工业集聚有利于企业间加强信息交流和技术协作,提高产品品质和市场竞争力;可以降低运费和能耗;可以充分利用基础设施,节约生产建设投资成本,降低企业的生产成本;可以提高生产效率,获得规模效应。

浙江新高考研究卷创新卷技术答案(1-5卷)

浙江新高考研究卷创新卷技术答案(1-5卷)

名校联盟★《新高考创新卷》 2020年2月《浙江省名校联盟新高考创新卷》技术参考答案(一)第一部分:信息技术一、选择题二、非选择题13.(1)=MID(B3,5,7) 或 =MID(B3,5,LEN(B3)-4) (说明:第三个参数大于等于7均算对)(1分)(2)A2:A10,E2:E10 (1分)(3)ABD(2分)14.(1)AC (2分)(2)形状补间或形状补间动画(1分)(3)选中“蜡烛”图层第26帧,执行清除关键帧操作或选中“蜡烛”图层第26帧至第56帧,执行删除帧操作,然后在56帧处插入帧(2分)(4)将“生日歌”图层第1帧移至第5帧(1分)(5)on(press){stopallsounds();geturl("wish.txt");}或 on(release) {stopallsounds();geturl("wish.txt");} (2分)15.(1)C (1分)(2)①xx(i) = Mid(s,i,1) (1分)②(i-1)*p+1 (2分)③errinfo(m) (1分)(3)j <=p And flagk<2 (2分)16.(1)B (1分)(2)①time(i) >= p (2分)②t = posi(i, k) (2分)③style1(L) = style1(m) And time1(L) < time1(m) (2分)第二部分:通用技术参考答案一、选择题二、非选择题14.(1)D、B ------2分(顺序不可颠倒)(2)A------1分(3)D------1分(4)C------1分(5)D------1分15.(1)A、E ------2分(2)(3)草图4分,尺寸标注2分(4)C------1分16.每线1分,共3分17.(1)D ------1分(2) ------2分(3)C ------1分(4) ------2分其他相同功能答案亦可《浙江省名校联盟新高考创新卷》技术参考答案(二)第一部分:信息技术一、选择题(本大题共12小题,每小题2分,共24分。

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名校联盟★《新高考研究卷》2020年02月《浙江省新高考研究卷》英语(四)第1卷第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。

每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置,听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1. How would the weather be at the end of holiday in Shanghai?A. Rainy and cold.B. Sunny and warm.C. Cloudy and warm.2. When did the woman have her breakfast?A. At 11:10.B. At 11: 30.C. At 11: 50.3. What does the man say about his grandmother?A. She can’t hear well.B. She loves him deeply.C. She has forgotten her children.4. What do we know about the man?A. He wants both pieces of cloth.B. He doesn’t like either piece of cloth.C. He can’t tell the two pieces of cloth apart.5. Which of the following can best describe Tony?A. Dangerous.B. Brave.C. Rude.第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。

每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项。

听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题给出5秒钟的作答时间。

每段对话或独白读两遍。

听第6段材料,回答第6 ~ 7题。

6. What is the documentary about?A. How people raised horses in ancient times.B. How people use horses for various purposes.C. How horse races are held in many countries.7. When will the speakers go horse-riding together?A. Tomorrow.B. This weekend.C. Next weekend.听第7段材料, 回答第8 ~ 9题。

8. What does the woman ask the man to show her?A. His passport.B. His business card.C. His ID card.9. What is the date today?A. October 21st.B. October 24th.C. October 27th.听第8段材料,回答第10 ~ 12题。

10. How does Tom feel now?A. Annoyed.B. Sad.C. Upset.11. What has been broken by Tom?A. A vase.B. A window.C. A basketball.12. What does the woman advise Tom to do?A. Apologize to Mr. Henry.B. Give Paul a call.C. Invite Mr. Henry to tea.听第9段材料,回答第13 ~ 16题。

13. What does the man want to confirm?A. The woman’s educational background.B. The woman’s work experience.C. The woman’s nationality.14. Where does the woman work now?A. In New York.B. In Singapore.C. In San Francisco.15. How much is the woman's present salary?A. $ 2,200.B. $ 2,280.C. $ 2,260.16. What are the employees allowed to do for further education?A. Attend college night courses at the weekend.B. Go abroad to have further education every year.C. Take up six hours a week to attend college courses.听第10段材料,回答第17 ~ 20题。

17. What actually made Liz determine to achieve her goal?A. Willpower and determination.B. Scholarship.C. Love and respect for her parents.18. How old was Liz when her mother died?A. 25 years old.B. 15 years old.C. 5 years old.19. Why did Liz leave Harvard a couple of months earlier this year?A. She could hardly afford the school fees.B. She had to look after her sick father.C. She would like to experience the social life as soon as possible.20. What is the talk mainly about?A. How Liz struggled to change her life.B. How Liz loved her drug-addicted parents.C. What a hard time Liz had in her childhood.第二部分阅读理解(共两节,满分35分)第一节(共10个小题;每小题2.5分,满分25分)阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项,并在答题卡将该选项涂黑。

AJanice Esposito was driving home as usual. However, out of nowhere a car hit Esposito’s minivan, pushing her backward some 100 feet onto the railroad tracks. She sat in the minivan, bruised but mostly just stunned by the impact and by the vehicle’s airbags.As it happens, Pete DiPinto was getting ready for bed. He was crawling under the covers when he heard the loud sound of metal on metal and shattering glass. A volunteer firefighter, DiPinto, 64, never stopped to think. He grabbed a flashlight and, still dressed in his pajamas, ran out of the door.2,000 feet from his front yard, DiPinto spotted Esposito’s car straddling the railroad tracks. And then he heard a sound: the bells signaling an on-coming train.DiPinto dashed to Esposito’s car and banged on the driver's side window. She just looked at him, her eyes unfocused. Without any hesitation, he pulled the handle, but the door was jammed shut. The train was traveling at 65 miles per hour toward them. DiPinto ran to the passenger side and threw open the door. “Please, God, don’t let her be trapped”, he thought. He pushed aside the airbags, grabbed Esposito’s arms, and pulled her toward him across the passenger seat until he could help her out and speed-walk her to safety. Within six seconds, he estimates, the train crushed the minivan. “It was like a Hollywood movie,” DiPinto told reporters the next day.21. What does the word “straddling” in paragraph 3 most probably mean?A. hitting.B. struggling.C. crossing.D. driving.22. We can learn from the passage that .A. The door on the driver’s side was thrown open at lastB. The firefighter Pete DiPinto was on duty when he heard the loud soundC. Janice Esposito was badly injured in the accident and lost her consciousnessD. The woman had been pulled out before the train crushed her minivan23. Which of the following words can best describe Pete DiPinto?A. Courageous and calm.B. Enthusiastic and kind.C. Ambitious and professional.D. Dutiful and generous.BThe victims were carried in one by one, their paws and fur burned, suffering from dehydration (脱水) and fear. Their caretakers bandaged their wounds, wrapped them and laid them in baskets with the only thing that was familiar --- the leaves of a eucalyptus (按树) tree.As catastrophic fires have burned more than two million acres in Australia, dozens of koalas have been rescued from burning trees and ashen ground. The animals, already threatened as a species before these latest fires destroyed an essential habitat, are being treated in rescue centers, and at least one private home, along the country’s east coast.The difficult situation of the koala --- a national symbol of Australia --- has raised questions among conservationists and scientists about what it will take to preserve biodiversity in a country increasingly exposed to intense fire, extreme heat and water scarcity, and which already has among the highest rates of species extinction in the world.While koalas have evolved to exist alongside wildfires, the animals are facing new threats not just from climate change but also from human development, which has dislocated local populations, damaging their ability to survive fires. In some regions, scientists say, koalas’ numbers have declined by up to 80 percent, though it is difficult to know how many remain across Australia.“We have these unique animals not found anywhere else on this planet, and we’re killing them,” said Cheyne Flanagan, the clinical director of the Koala Hospital, the only facility of its kind in the world. “This is a big wake-up call.”24. What happened to koalas after the catastrophic fires in Australia?A. The koalas were taken good care of after being rescued.B. Most of koalas have been rescued from burning trees.C. The victims only suffered from severe burns and a lack of water.D. Koalas have been listed among the highest rates of species extinction.25. Which of the following threats koalas face are not mentioned in the passage?A. illegal hunting.B. fires in the wild.C. human development.D. climate change.26. What’s the author’s attitude towards the situation of Koala?A. negative.B. supportive.C. indifferent.D. worried.27. What might be the best title for the passage?A. Climate Changes --- A Big Wake-up CallB. Koala --- A National Symbol of AustraliaC. Catastrophic Wildfires Burning in AustraliaD. Saving the Fire Victims Who Cannot FleeCOn March 21 in early 1969, 23-year-old Jane Mixer was shot in the head. Mixer’s murder stayed unsolved for the next four decades, until the police announced in 2005 they were charging a retired nurse, Gary Leiterman, with her death. While re-examining the case, investigators found Leiterman’s DNA on Mixer’s socks and discovered DNA belonging to another man, John Ruelas, in a sample of blood from Mixer’s hand. It could have been impossible to tell which one was responsible for her death. However, police got lucky: Ruelas was only 4 years old in 1969 and Leiterman therefore was sentenced for the first-degree murder.All three samples had obviously become contaminated (污染) in the lab, which unfortunately occurs sometimes when procedures aren’t properly followed. But that isn’t the only problem with using DNA to solve crimes. DNA also can degrade (分解) quickly under strong sunlight. Or there might not be enough DNA to collect. DNA is still the gold standard, but contrary to what we see on TV, nothing is perfect.That’s why Hart and his team began their work with hair analysis. They believe this new method will improve the DNA testing within a decade. Early results are satisfying, according to a published report of their work. “The protein content of hair is changing with people’s genetic makeup,” explains Hart. There are more than 300 different proteins in hair and by looking at these proteins, researchers can set up an individual's protein profile. And another advantage of hair analysis: Proteins, in hair and elsewhere, are a lot stabler than DNA and can last for a longer time.Although the hair analysis is not yet reliable enough for daily identifications, hair is an easy-to-get source of material which is always left behind. With the improvement in the accuracy, the hair analysis should be able to serve as a check on possible DNA errors.28. What did the investigators find out when they re-examined the Mixer’s case?A. The hair of the killer.B. Leiterman’s socks in Mixer’s room.C. The DNA of a retired nurse and of another man John Ruelas.D. The murderer’s blood on Mixer’s hands.29. The author quotes the case of Jane Mixer to illustrate that .A. the DNA testing is the perfect way to find out the criminals.B. Mixer’s murder is an unsolved case left in the 20th century.C. there are some problems with the use of DNA to solve crimes.D. The police are very lucky to find out the criminal responsible for the Mixer’s death.30. What are the advantages of hair analysis over the DNA testing?A. Proteins in the hair can last longer as they will not degrade under strong sunlight.B. There are more kinds of proteins in hair than in DNA.C. Hair analysis is more reliable than DNA testing for daily identifications.D. Hair can be collected more easily and proteins in it are much more stable than DNA.第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。

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