名师伴你行高考一轮2021英语答案

选修4 Unit 3

Ⅰ.单词拼写

1．Mark Twain was a________(幽默的)writer and his works always make readers laugh. 2．Because of the war，many people became________(无家可归的)in Libya. 3．The________(喝醉的)driver was punished severely by the police. 4．The thief________(溜进)into the house without anyone noticing him. 5．Seeing my arrival，he came over and________(低语)something in my ear. 6．Well，you've acted________(愚蠢地)and you will pay for it. 7．French has many________(多山的)regions for skiing in winter.

8．Some kids are very________(挑剔的)about food，that is，t

课时作业(二十一) DNA的分子结构、

复制及基因的本质

1．在一对等位基因中，一定相同的是( ) A．氢键数目 C．遗传信息

B．碱基数目 D．基本骨架

答案：D 解析：等位基因是通过基因突变形成的，基因中碱基对的数目和排列顺序可能不同，氢键数目也可能不相同，所携带遗传信息不同。等位基因都是有遗传效应的DNA片段，都是磷酸、脱氧核糖交替排列形成基本骨架，D项正确。

2．以下是某同学制作的脱氧核苷酸对模型，其中正确的是( )

A B

C D

答案：D 解析：从五碳糖和磷酸基团的形态和位置可判断，两条脱氧核苷酸链不是反向平行的，A错误；A与T之间的氢键应该是两个而不是三个，B错误；含氮碱基(C)应连接在五碳糖的1号位置上(如下图所示)，且G与C之间有三个氢键，C错误。

3．[2018·湖南郴州二模]DNA熔解温度(Tm)是使DNA双螺旋结构解开一半时所需要的温度，不同种类DNA的Tm值不同。如图表示DNA分子中G＋C含量(占全部碱基的比例)与Tm的关系。下列有关叙述不正确的是 ( )

A．一般地说，DNA分子的Tm值与G＋C含量呈正相关 B．Tm值相同的DNA分子中G＋C的数量

选修4 Unit 3

Ⅰ.单词拼写

1．Mark Twain was a________(幽默的)writer and his works always make readers laugh. 2．Because of the war，many people became________(无家可归的)in Libya. 3．The________(喝醉的)driver was punished severely by the police. 4．The thief________(溜进)into the house without anyone noticing him. 5．Seeing my arrival，he came over and________(低语)something in my ear. 6．Well，you've acted________(愚蠢地)and you will pay for it. 7．French has many________(多山的)regions for skiing in winter.

8．Some kids are very________(挑剔的)about food，that is，t

【名师伴你行】2015高考物理大一轮复习 7.2 电路的基本规律

及应用提升训练（含2014新题）

1．(2014·黄冈测试)下列关于电源电动势的说法中正确的是( )

A．在某电池的电路中，每通过2 C的电荷量，电池提供的电能是4 J，那么这个电池的电动势是0.5 V

B．电源的路端电压增大时，其电源提供的电能一定也增大 C．无论内电压和外电压如何变化，其电源的电动势一定不变 D．电源的电动势越大，电源所能提供的电能就越多

解析：由E＝得E＝2 V，则A错误；电源的电动势与外电路无关，只由电源自身的性质决定，则B错，C对；电源的电动势大，所提供的能量不一定大，电源提供的电能取决于通过电源的电量与电动势之积，D错误．

答案：C

2．如图所示，直线Ⅰ、Ⅱ分别是由电源1和电源2的路端电压随输出电流变化的特性图线，曲线Ⅲ是一个小灯泡的伏安特性曲线，如果把该小灯泡分别与电源1、电源2单独连接，则下列说法正确的是( )

A．电源1与电源2的内阻之比是7∶11 B．电源1与电源2的电动势之比是1∶1

C．在这两种连接状态下，小灯泡的电阻之比是1∶2 D．在这两种连接状态下，小灯泡消耗的功率之比是1∶2

10

Er17

解析：由题图知E1＝E2＝10 V，由

【名师伴你行】2015高考物理大一轮复习 7.2 电路的基本规律

及应用提升训练（含2014新题）

1．(2014·黄冈测试)下列关于电源电动势的说法中正确的是( )

A．在某电池的电路中，每通过2 C的电荷量，电池提供的电能是4 J，那么这个电池的电动势是0.5 V

B．电源的路端电压增大时，其电源提供的电能一定也增大 C．无论内电压和外电压如何变化，其电源的电动势一定不变 D．电源的电动势越大，电源所能提供的电能就越多

解析：由E＝得E＝2 V，则A错误；电源的电动势与外电路无关，只由电源自身的性质决定，则B错，C对；电源的电动势大，所提供的能量不一定大，电源提供的电能取决于通过电源的电量与电动势之积，D错误．

答案：C

2．如图所示，直线Ⅰ、Ⅱ分别是由电源1和电源2的路端电压随输出电流变化的特性图线，曲线Ⅲ是一个小灯泡的伏安特性曲线，如果把该小灯泡分别与电源1、电源2单独连接，则下列说法正确的是( )

A．电源1与电源2的内阻之比是7∶11 B．电源1与电源2的电动势之比是1∶1

C．在这两种连接状态下，小灯泡的电阻之比是1∶2 D．在这两种连接状态下，小灯泡消耗的功率之比是1∶2

10

Er17

解析：由题图知E1＝E2＝10 V，由

提能专训(一)

Ⅰ.压缩语段专练

1．(2014·大纲卷)下面是某影城招聘值班经理启事中的六项内容，请按性质的不同将它们分为两类，并为每类命名。

①具有良好的职业操守及团队合作精神。

②有较强的沟通、协调和组织能力，以及对突发事件的应变能力。 ③负责本部门运营区域设备设施的维护与利用。 ④分析影城每月的运营状况。

⑤热爱影城工作，有影城管理的相关知识。 ⑥协助运营经理管理影院日常工作。

答：___________________________________________________ ___________________________________________________________

答案：第一类：③④⑥ 命名：岗位职责 第二类：①②⑤ 命名：任职要求 (命名如有其他答案，意思答对即可)

解析：根据题干可知，这则招聘启事的六项内容可分为两组。通读六项内容可知，③④⑥描述的是该岗位所要负责的事务，①②⑤描述的是应聘该岗位应具备的能力和素养，即任职要求。确定分类标准后用合适的词语或短语准确地概括出来即可。

2．(2014·山东济宁一模)下面是来自《环球时报》的新闻，试用简洁概括的语言向同学们转达主要信息，不得超过30个字

高三英语一轮复习练习

句式及句型专练100题

1. — Have you known each other for long?

— Not very long, ____ we started to work in the company.

A. after B. before C. when 2. — Did you enjoy yourself at the party?

— Sorry to say I didn?t. It was ____ a meeting than a party. A. much of less

3. He is rather difficult to make friends with, but his friendship, ____, is more true than any other.

A. once gained

B. when to gain

C. after is gained D. while gaining

C. whose the banks D. the ban

高考综合测试

第一节单项填空（共15小题；每小题1分，共15分）

21. Experiments of this kind ____ in both the U.S. and Europe well before the Second World War.

A. have conducted

B. have been conducted

C. had conducted

D. had been conducted

22. ________ Barbara Jones offers to her fans is honesty and happiness.

A. Which

B. What

C. That

D. Whom

23. Tom _______ in the library every night over the last three months.

A. works

B. worked

C. has been working

D. had been working

24. —I don’t really like James. Why did you invite him?

—Don’t worry. He ________ come. He said he wasn

高考英语第一轮复习配套精品资料及答案

Module 1

Unit 1 Lifestyles

Ⅰ.品句填词

1.After he g from the university,he found a job in a computer company. 2.Study hard,o you will not pass the final exam.

3.I find stamp-collecting r and it takes my mind off the stress of my work. 4.In fact,life is full of different (挑战)when one is born into this world. 5.It is reported that there were about 100,000 Games-time (志愿者)taking part in the 2008 Olympic Games.

6.Some students (抱怨)that their homework is too much.They almost have no enough time

温馨提示：

此套题为Word版，请按住Ctrl,滑动鼠标滚轴，调节合适的观看比例，答案解析附后。关闭Word文档返回原板块。

课时提升作业(三十七)

选修8 Units 3、4

Ⅰ. 阅读理解

A

As the thrills of the London 2012 Olympic Games fade, the focus now is on the 2016 Olympic Games in Brazil. Over the next two years it hosted the FIFA Confederation Cup in June 2013 and will host the FIFA World Cup in 2014. Brazil has taken steps to increase the economic profits by safeguarding the interests of broadcasters and funders.

In 2009, the Brazil passed the Brazilian Olympic Act and the so-called World Cup L