Unit 2 Cloning Ⅰ.单项填空

1．Be ________—you can’t expect me to finish all this work in so little time. (2012·山东，33) A．reasonable B．confident C．creative D．grateful 答案 A

解析 reasonable合理的；公平的；confident自信的；creative有创造力的，创造(性)的；grateful感激的。由破折号后面的关键信息可知说话者对“finish all this work in so little time”很不满，要求讲道理。be reasonable为祈使语气，意为“要讲道理”。句意为：要讲道理——你不能期望我在如此短的时间里完成所有这些工作。

2．________volleyball is her main focus，she’s also great at basketball. (2011·北京，29) A．Since B．Once C．Unless D．While 答案 D

解析 句意为：虽然排球是她的主要核心项目，但是她篮球打得也很棒。根据句意可知，这里表示让步关系。while虽然，符合句意。since既然；once一旦；unless除非。 3．We have our bad times but on the whole we’re ________ happy. A．rarely B．merely C．fairly D．chiefly 答案 C

解析 考查副词辨析。句意为：我们处境艰难，但是总体来说我们相当高兴。根据本句中的转折连词but可知应用fairly，表示“相当，颇”。A项表示“很少”；B项表示“仅仅”；D项表示“主要”，都不符合句意。

4．It makes his life quite different________he has received higher education abroad. A．that B．which C．what D．how 答案 A

解析 考查主语从句。it作形式主语，that引导的从句作真正的主语。 5．Things in the world differ________each other in countless ways. A．with B．in C．from D．by 答案 C

解析 考查固定搭配。differ from与??不同。句意为：在很多方面，世界上的东西都有着差异。

6．This group of designers________a plan for the project of the company. A．drew up B．sent up C．set up D．turned up 答案 A

解析 考查动词短语辨析。draw up草拟，写出。句意为：设计小组为公司的那项工程起草了计划。send up 发射；set up树立，创立；turn up调大，现身。

7．Britain________many other industrialized countries，________major changes over the last 100 years.

A．together with；have experienced B．as well as；have experienced

C．in common with；has experienced D．instead of；has experienced

答案 C

解析 考查主谓一致。in common with意为“和??一样”，谓语动词单复数跟前面的主语保持一直。句意为：与其他工业化国家一样，英国在过去100年里经历了重大的变化。A、B两项第一空together with，as well as意思及用法与in common with类似，均错在第二空；D项instead of“而不是”，不合句意。

8．I________it to my teacher that I was admitted into my ideal university. A．owe B．belong C．give D．donate 答案 A

解析 句意为：我上了理想的大学，我将这归功于我的老师。owe...to...归功于??；感激??，符合语意要求。

9．At school，some students are active ________ some are shy，yet they can be good friends with

one another. (2012·四川，4) A．while B．although C．so D．as 答案 A

解析 考查并列连词。句意为：在学校，一些学生很活跃而一些却很害羞，然而他们都可能彼此成为好朋友。根据句意选while，表示两个分句中两种情况的对比。

10．I agree to his suggestion________the condition that he drops all charges. (2010·辽宁，31) A．by B．in C．on D．to 答案 C

解析 句意为：我同意他的建议，条件是他应降低所有的费用。on the condition that在此处起连词作用，引导条件状语从句，意为“条件是，如果??”。此短语中只能用介词on，故选C。

11．As long as we persist in spreading scientific knowledge among the masses，all the strange beliefs are________to go out of our life.

A．necessary B．important C．difficult D．bound 答案 D

解析 考查形容词辨析。句意为：只要我们坚持在公众中传播科学知识，所有奇怪的信仰一定会从我们的生活中消失。necessary必要的，必需的；important重要的；difficult困难的，艰难的；bound注定的。从语意和搭配看，这里用固定短语be bound to do sth.表示“注定做某事”。故选D项。

12．Bears often hide themselves in places________can’t be found by hunters. A．in which B．where C．that D．/ 答案 C

解析 考查定语从句的关系词。此处that在定语从句中作主语。

13．Is it he or you________in charge of the job and supposed to complete it punctually? A．who is B．that is C．who are D．whom are 答案 C

解析 考查强调句型及主谓一致。此处为强调句型，强调了主语he or you，根据强调句型结构“It is/was＋被强调部分＋that/who＋其他”，首先排除D；谓语的单复数根据所强调的主语he or you确定，or连接并列主语时采用就近一致原则，因此根据you确定谓语为are。

14．I usually take something to read when I travel by train________I feel bored. A．as if B．so that C．in case D．even though 答案 C

解析 考查连词。in case以防。句意为：我坐火车旅行的时候，通常带些东西去读，以防感到无聊。

15．All of us have already known________she will choose is the opportunity to go abroad. A．this B．that C．what D．which 答案 C

解析 考查名词性从句。句意为：我们都已经知道她将选择的是出国的机会。what she will choose is the opportunity to go abroad是宾语从句，在从句中，what she will choose是从句的主语，what在主语从句中作choose的宾语。 Ⅱ.阅读理解 A

Modern day robots may not be as entertaining as R2D2 or the robot from “Lost in Space”，but robots are very important to space exploration and are being used in a variety of different ways for several important reasons.

Robots make great explorers on planets，moons，and other landing areas.Aside from the Earth，just about every surface in the solar system is unsafe for humans to explore.The air on most other planets is insufficient for humans to breathe，making it necessary to wear a space suit and oxygen equipment，The temperatures on these surfaces are much too hot or much too cold for any humans to withstand.Plus there would be complications with radiation，weather，and a lack of gravity.Robots have much less limitation in these areas and can survive much longer under these conditions.

Robots are designed for collecting scientific data.Robots are also able to perform many tasks at one time and can process information much quicker and more efficiently.Important scientific projects from detecting minerals，analyzing ground samples，to finding water are all performed much quicker and accurately by robots.

The use of robots has made the cost of space exploration much less expensive than it would cost for humans to do the work.In order to successfully send humans into space we would need to build a vehicle that can not only carry humans，but also enough food and water to keep them alive for the duration of the trip.Moreover，robots have no problems working for hours on end.Robots never complain，they don’t require food or water，and they never need a bathroom break.

Over the past 30 years or so there have been many different types of robots used successfully in the exploration of space.Perhaps the most famous and successful robots are Spirit and Opportunity who have both been exploring the surface of Mars.They have both been very successful with experiments on soil and rocks and have even found evidence of water in Mars’ history.

1．Which of the following would be the best title for the passage? A．The development of robots

B．The discovery of space exploration C．No robots，no space exploration D．Robots are used in space exploration