Unit 3 Computers
.单项填空
1．Teachers have to constantly update their knowledge in order to maintain their professional____.
A．consequence
B．independence
C．competence
D．intelligence
解析 考查名词词义的辨析。consequence结果；后果；independence 独立； competence 能力；intelligence智力。句意：教师必须不断的更新自己知识以便于保持他们在职业上的能力。
答案 C
．Why are you so anxious？It isn’t your problem______.
A．on purpose
B．in all
C．on time
D．after all
句意：你为什么担心呢？毕竟那不是你的问题。on purpose有意地；in all总共；on time准时；after all毕竟，终究，别忘了，到底。
D
3．Many people believe that poverty is only a problem in rural areas.________，it is also a problem in some urban areas.
A．As a result
B．Furthermore
C．In the end
D．As a matter of fact
解析 考查短语的辨析。as a result 因此；furthermore而且；in the end 最后；as a matter of fact 实际上。句意：许多人认为贫穷只是乡村地区存在的问题，实际上，它也是部分城市地区存在的问题。
答案 D
4．What he has said is reasonable________.
A．in the way
B．on the way
C．by the way
D．in a way
解析 考查介词短语的辨析。in the way 挡道；碍事；on the way 在途中；即将到来；by the way顺便说；顺便问一下；in a way在某方面。句意：他说的话在某些方面是合理的。
答案 D
5．China has shown increasingly positive________of economic performance，but the country's economic recovery is still uncertain，Prime Minister Wen said.
A．traces
B．signals
C．marks
D．signs
解析 考查名词词义的辨析。trace痕迹；遗迹；signal信号；mark符号；记号；sign符号；标记。句意：温家宝总理说中国已经表现出了日益增长的经济实绩的征兆，但是国家的经济复苏还不稳定。答案 D
6．I haven't seen Ann for ________ long that I've forgotten what she looks like.
A．such
B．very
C．so
D．too
解析 句意：我有很长时间没见着安了，我已忘记她长什么样了。so/such...that如此……以至于，即so＋adj./adv.＋that，而such＋n.＋that，long为形容词，故用so。
答案 C
．Teachers recommend parents______their children under 12 to ride bicycles to school for safety.
A．not allowB．do not allowC．mustn’t allow
D．couldn’t allow
解析 句意：老师们建议父母们不要允许12岁以下的孩子骑自行车上学，以确保安全。recommend 表“建议”时，其后的宾语从句的谓语用should do或should not do形式，should可以省略，故此题选A项。此题还省略了宾语从句的引导词that。
答案 A
．The traffic accident ______ his fast driving and he was badly hurt.
A．led to
B．arose from
C．resulted in
D．separated from
解析 lead to/ result in“引起，导致”，后接结果；arise from“由……引起”，后接原因；separate from“分离”。
答案 B
9．—Why didn't you ask the teacher for advice?
—She had left the office________I had time to do it.
A．before
B．as
C．after
D．till
解析 考查before作连词的用法。before表示“在……之前”，此处指“我还没来得及问，她就离开了办公室”。
答案 A
1．You should take ______ of this opportunity and try to make a good impression on them.
A．care
B．advantage
C．charge
D．place
解析 句意：你应该利用这次机会努力给他们留下一个好印象。take care of “照料”；take advantage of“利用”；take charge of“掌管”；不存在take place of这个短语。只有take advantage of符合句意。
答案 B
11．All the employees except the manager________to work online at home.
A．encourages
B．encourage
C．is encouraged
D．are encouraged
解析 句中有介词短语except the manager，谓语动词和前面的主语All the employees一致，用复数；根据句意，employees和encourage是被动关系，表示“被鼓励”，而且是一般现在时态，表示一般的动作，所以用一般现在时的被动语态。
答案 D
12．English is considered as a(n)________language，and it is no surprise that there are so many people in the world learning English.
A．universal
B．logical
C．artificial
D．regular
解析 考查形容词辨析。句意：英语被认为是世界通用语言，所以有如此多的人学习英语就不足为奇了。universal普遍的，通用的。logical合情理的，合逻辑的；artificial人造的；regular规则的，常规的。
答案 A
13．He proved himself a true gentleman and the beauty of his________was seen at its best when he worked with others.
A．advantage
B．appearance
C．qualification
D．character
解析 考查名词词义辨析。句意：他证明了自己是一个真正的绅士，他的人格魅力在与他人合作时表现得最佳。advantage优点，长处；appearance外表，外貌；qualification资格；character品质，性格。
答案 D
．______ it is a good thing I didn’t get the post I had applied for，though I must admit that I was disappointed at the time.
A．By the way
B．In a way
C．In the way
D．In no way
解析 in a way“在某种程度上”；in no way“决不”；by the way“顺便提一下”；in the way“碍事”。句意：我没有得到我申请的工作，在某种程度上说是件好事，尽管我承认当时我很失望。
答案 B
15．________time goes by，Mother's hair has turned grey and the wrinkles on her face deeper.
A．As
B．With
C．While
D．Because
解析 考查连词。As time goes by意为“随着时间的流逝”。若用with，要将goes改为going。
答案 A
.完形填空
Preparing for Tomorrow
Sixthgrade schoolteacher Ms.Shelton believed in readiness.Students remembered how she walked in on the first day of class and began writing words of eighthgrade on the__1__.They quickly protested that the words were not on their__2__and they couldn't learn them.
Their teacher insisted that the students could and would learn these__3__.She said that she would teach them something that should be given.Ms.Shelton__4__by saying that one of the students in the classroom could go on to__5__，maybe even be president someday，and she wanted to prepare them for that day.
Ms.Shelton spoke those words many years ago.__6__did she know that someday one of her students—Jesse Jackson—would take them__7__.She believed that if they were well prepared，they could__8__high goals.
Ralph Waldo Emerson once said，“People only see what they are__9__to see.”If that's true，then it is also__10__that they only become what they are prepared to become.And many things in life is just about getting ready.
“I want to be doing something more__11__with my life than what I am doing now，”a young man once said to me.He__12__what he was doing was just not that important.Other people have said things to me such as，“I only__13__I had a meaningful relationship.I'd really like to get a better job，but I just don't see__14__.”
You fill in the blanks.What is it you would like to__15__that isn't happening？Perhaps the answer is that you are not yet__16__.Maybe you need more time to prepare before you are truly ready for that which you__17__.
Think of today as another chance to__18__yourself for that exciting future you are looking for.Today is not wasted.If you desire more from__19__，then you can use today as training.For you will experience only what you are prepared to__20__.Something wonderful can happen.And you can use today to get ready for tomorrow.
1．A.desk
B．wall
C．chalkboard
D．door
解析 结合前面的“Sixthgrade schoolteacher Ms.Shelton”和“began writing words”可知老师在教室里，应该是在黑板(chalkboard)上写字。
答案 C
2．A.duty
B．desk
C．mind
D．level
解析 由前面的“Sixthgrade schoolteacher”及“writing words of eighthgrade”可知这些词超出了他们的水平。故选D项。
答案 D
3．A.words
B．grammars
C．pronunciations
D．sentences
解析 根据第一段中的“writing words of eighthgrade”可知此处表示老师认为学生们能够并且将学会这些单词。
答案 A
4．A.started
B．ended
C．warned
D．reminded
解析 结合上下文可知此处是老师总结性的话，即老师最后说……故选end。答案 B
5．A.greatness
B．wealth
C．honor
D．failure
解析 从后面的“maybe even be president someday”可知此处指将来某一天这个班中的某一个学生会成为伟大的人物(greatness)。wealth财富；honor荣誉；failure失败，均不符合语境。
答案 A
6．A.Seldom
B．Little
C．Hardly
D．Totally
解析 从后面的“did she know that someday one of her students—Jesse Jackson—would take them”可知当时这个老师并没有意识到自己的话对学生的影响，其中有一个学生杰克逊很认真地对待了她说的话。seldom很少，不常，表示否定意义，指频率，可以排除；little不多，稍微；hardly几乎不；totally全部地；只有little符合语境。
答案 B
7．A.nervously
B．eagerly
C．seriously
D．simply
解析 take sth seriously认真地对待某事，是固定搭配。
答案 C
8．A.keep
B．have C．set
D．achieve
解析 根据前面的“She believed that if they were well prepared”可知她认为学生们只要做好准备，就一定会实现(achieve)他们的目标。keep保持；have拥有；set使处于。
答案 D
9．A.prepared
B．forced
C．attracted
D．tempted
解析 根据后一句中的“they only become what they are prepared to become”可知答案为A项。
答案 A
10．A.proper
B．exact
C．legal
D．true
解析 根据前面的“If that's true，then it is also”以及空格后面的“that they only become what they are prepared to become.”可知，此处指他们仅会成为准备成为的那样的人，这一点也是真实的(true)。proper恰当的；exact精确的；legal合法的，均不符合语境。
答案 D
11．A.difficult
B．significant
C．pleasant
D．interesting
解析 根据后面的“He__12__what he was doing was just not that important.”可知此处表示他想做一些比现在所做的更加有意义的事情，所以选B项。
答案 B
12．A.boasted
B．behaved
C．felt
D．looked
解析 他认为自己现在从事的事情不重要。feel认为，符合语境。
答案 C
13．A.wish
B．expect C．hope
D．imagine
解析 前面的“want to”和后面的“I'd really like to”都是说明一些人的愿望。从这个空后面的had可知此处是一种虚拟的形式，所以不用hope，应用wish。
答案 A
14．A.what
B．when
C．why
D．how
解析 根据前面的“I'd really like to get a better job”可知此人想获得一份好的工作，但是不知道怎样获得。
答案 D
15．A.survive
B．happen
C．gain
D．win
解析 由后面的“that isn't happening”可知B正确。survive幸存；gain获得；win赢得，均不符合语境。
答案 B
16．A.adventurous
B．active
C．ready
D．intelligent
解析 由后句“Maybe you need more time to prepare before you are truly ready...”可知C项正确。adventurous冒险的；active积极的；intelligent聪明的。
答案 C
17．A.concern
B．arrange
C．adore
D．desire
解析 由下一段的“If you desire more from__19__”可知选D项。
答案 D
18．A.prepare
B．enjoy C．imagine
D．conduct
解析 根据文章题目“Preparing for Tomorrow”及文章主旨可知此处选prepare。
答案 A
19．A.history
B．nature
C．life
D．marriage
解析 由第五段第一句“...with my life...”可知选C项。
答案 C
20．A.suffer
B．experience
C．struggle
D．work
解析 由此句句意“因为你只能经历你准备经历的。”可知B项正确。
答案 B
Ⅲ.阅读理解
In an ideal world，people would not test medicines on animals.Such experiments are stressful and sometimes painful for animals，and expensive and timeconsuming for people.Yet animal experimentation is still needed to help bridge vast gaps in medical knowledge.That is why there are some 50 to 100 million animals used in research around the world each year.
Europe，on the whole，has the world’s most restrictive laws on animal experiments.Even so，its scientists use some 12 million animals a year，most of them mice and rats，for medical research.Official statistics show that just 1.1 million animals are used in research in America each year.But that is misleading.The American authorities do not think mice and rats are worth counting and，as these are the most common laboratory animals，the true figure is much higher.Japan and China have even less comprehensive data than America.
Now Europe is reforming the rules governing animal experiments by restricting the number of animals used in labs.Alternatives to animal testing，such as using human tissue or computer models，are now strongly recommended.In addition，sharing all research results freely should help to reduce the number of animals for scientific use.At present，scientists often share only the results of successful experiments.If their findings do not fit the hypothesis being tested，the work never sees the light of day.This practice means wasting time，money，and animals’ lives in endlessly repeating the failed experiments.
Animal experimentation has taught humanity a great deal and saved countless lives.It needs to continue，even if that means animals sometimes suffer.Europe’s new measures should eventually both reduce the number of animals used in experiments and improve the way in which scientific research is conducted.
【语篇解读 用动物进行试验被人们的舆论推向了风口浪尖，然而，受诸多因素的影响，终止动物试验的道路依然任重而道远。尽管欧洲有严格的法律限制，但是仍然需要另找突破口。
1．What is the main idea of this passage?
A．The success of animal experiments should be ensured.
B．A ban on the use of animals in the lab should be enforced.
C．Greater efforts need to be taken to reduce the number of lab animals.
D．Scientists should be required to share their research results with each other.
解析 主旨大意题。文章第一段指出用动物进行试验难以杜绝的原因，第二段提到欧洲对动物试验的法律限制的效果并不理想，第三段讲了欧洲为限制动物试验所作的努力，最后一段提到欧洲的新措施应该既要减少用于试验的动物的数量，又要改善科学研究的方法，所以C项最能概括文章大意。
答案 C
2．Which of the following statements is true about animals used in the lab?
A．America uses only about 1.1 million lab animals per year.
B．Europe does not use mice and rats as lab animals at all.
C．Britain does not use as many lab animals as China does.
D．Japan has limited data on the number of lab animals used each year.
解析 正误判断题。第二段的最后一句提到日本和中国与美国的数据相比甚至更不全面，由此可推知日本对每年用于实验室动物的数据记录有限。
答案 D
3．Which of the following is mentionad as an alternative to replace animal experiments?
A．Statistical studies.
B．Computer models.
C．DNA planted in animals.
D．Tissue from dead animals.
解析 细节理解题。根据第三段第二句中的内容可知可用“人体组织”和“电脑模型”来取代动物试验。
答案 B
4．What usually happens to unsuccessful animal experiments?
A．They are not revealed to the public.
B．They are made into teaching materials.
C．They are collected for future publication.
D．They are not removed from the research topic list.
解析 推理判断题。根据第三段中的倒数第二、第三句可知，科学家们只分享成功的试验，如果结果与假设不符，所做的工作将永不公开。由此可推断不成功的试验不会展示给公众。
答案 A