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(时间:45分钟 满分:65分)
Ⅰ.单项填空(共15小题;每小题1分,满分15分)
1.I will be away for at least a year;I would appreciate________from you now and then,________me how everyone is getting along.
A.hearing;tell B.to hear;tell
C.hearing;telling D.to hear;to tell
2.This special school accepts all disabled students,________educational level and background.
A.according to B.regardless of
C.in addition to D.in terms of
3.Steps must be taken________this kind of disaster will never happen again.(2012·山东诸城市高三月考)
A.because B.even if
C.so that D.as
4.—Why don't we choose that road to save time?
—The bridge to it________.
A.has repaired B.is repaired
C.is being repaired D.will be repaired
5.In the last few years thousands of films________all over the world.
A.have produced B.have been produced
C.are producing D.are being produced
6.The conference has been held to discuss the________of the Japan's nuclear radiation on people's lives in this area.
A.effects B.concern
C.protection D.attitudes
7.Many wild animals________,so we must take measures to protect them.(2012·山东实验中学高三模拟)
A.are dying out B.have died out
C.died out D.die out
8.According to the record reports, one of the rare animals,________crocodile is in________danger of dying out.
A.a; the B./ ;as
C./ ; the D.the ; /
9.Many developing countries are unwilling to pursue their economic development________destroying the environment despite there being several financial crises. (2012·江苏淮安高三调研)
A.at the risk of B.at the cost of
C.at the end of D.at the mercy of
10.Good dietary sources of calcium should________leafy green vegetables, fish,yogurt, tofu and breakfast cereals(谷类食物).
A.contain B.possess C.share D.include
11.—What is that noise?
—Oh, I forgot to tell you that the new machine________.(2012·安徽百校论坛高三联考)
A.was tested B.will be tested
C.has been tested D.is being tested
12.________moment he saw Zhao Benshan's funny performances, he burst into________ laughter.(2012·浙江学军中学高三模拟)
A.A;/ B.A;the
C.The;/ D.The; a
13.Always remember that your own decision________is more important than anything else.
A.to succeed B.succeeding
C.having succeeded D.succeeded
14.It was not what he said but________he said it that made me surprised.
A.the way B.in the way that
C.in the way D.the way which
15.________in volunteering work,the couple lead a busy and rich life they retired.
A.Employing B.Employed
C.To employ D.Being employed
Ⅱ.完形填空(共20小题;每小题1.5分,满分30分)
You have waited 45 minutes for the valuable 10 minutes' break between classes.But when the bell for the next class rings,you can't __16__ how quickly time has passed.
If you are familiar with this __17__,you'll know how time flies when you are having fun and __18__ when you are bored.Now scientists have __19__ a reason why this is the case.
Scans have shown that patterns of activity in the brain __20__ according to how we focus on a task.When we are __21__,we concentrate more on how time is passing.And this makes us __22__ the clock is ticking more slowly.
In an experiment __23__ by a French laboratory,12 volunteers watched an image __24__ researchers monitored their brain activity.
The volunteers were told to __25__ concentrate on how long an image appeared,then __26__ the color of the image,and third,study both the duration and the color.The results showed that the __27__ was more active when the volunteers paid attention to __28__ subjects.
It is thought that if the brain is __29__ focusing on many aspects of a task,it has to __30__ its resources,and pays less attention to the clock.__31__,time really passes without us __32__ it,and seems to go quickly.If the brain is not so active,it concentrates its __33__ energies on monitoring the passing of time.__34__,time seems to drag.
Next time you feel bored __35__,perhaps you should pay more attention to what the teacher is saying!
16.A.guess B.learn C.believe D.doubt
17.A.view B.point C.scene D.experience
18.A.drags B.stops C.backs D.gains
19.A.thought over B.made up C.came out D.come up with
20.A.change B.develop C.grow D.slow
21.A.sleepy B.bored C.excited D.active
22.A.report B.think C.decide D.see
23.A.produced B.carried C.tried D.performed
24.A.so B.when C.while D.but
25.A.partly B.quickly C.slowly D.first
26.A.remember B.focus on C.forget D.tell apart
27.A.researchers B.experiment C.clock D.brain
28.A.much B.many C.less D.more
29.A.busy B.likely C.ready D.sure
30.A.focus B.gather C.reach D.spread
31.A.However B.Furthermore C.Therefore D.Finally
32.A.recognizing B.watching C.noticing D.counting
33.A.enough B.full C.right D.proper
34.A.In fact B.As a result
C.For example D.Instead of
35.A.in class B.with work
C.in mind D.of lessons
Ⅲ.阅读理解(共10小题;每小题2分,满分20分)
A
A recent study of ancient and modern elephant has come up with the unexpected conclusion that the African elephant is divided into two distinct (不同的 )species.
The discovery was made by researchers at York and Harvard University when they were examing the genetic relationship between the ancient woolly mammoth and mastodon modern elephants—the Asian elephant, African forest elephant, and African savanna elephant.
Once they obtained DNA sequences(序列)from two fossils(化石),mammoths and mastodons, the team compated them with DNA from modern elephants. They found their amazement that modern forest and savanna elephants are as distinct from each other as Asian elephants and mammoths.
The scientists used detailed genetic analysis to prove that the African savanna elephant and the African forest elephant have been distinct species for several million years. The_divergence of the two species took place around the time of the divergence of Asian elephants and woolly mammoths. This result amazed all the scientists.
There has long been debate in the scientific community that the two might be separate species, but this is the most convincing scientific evidence so far that they are indeed different species.
Previously, many naturalists believed that African savanna elephants and African forest elephants were two populations of the same species, despite the elephants' significant size differences. The savanna elephant has an average shoulder height of 3.5 metres while the forest elephant has an average shoulder double the weight of the forest elephant. But the fact that they look so different does not necessarily mean they are different species. However,the proof lay in the analysis of the DNA.
Alfried Roca, assistant professor in the Department of Animal Sciences at the University of Illinois, said, “We now have to treat the forest and savanna elephants as two difficult units for conservation purpose. Since 1950, all African elephants have been conserved as one species. Now that we know the forest and savanna elephants have been distinct animals, the forest elephant should become a bigger priority(优先)for conservation purposes.”
36.One of the fossils studied by the researchers is that of ________.
A.the Asian elephant
B.the forest elephant
C.the savanna elephant
D.the mastodon elephant
37.The underlined word “divergence” in Paragraph 4 means“________”.
A.evolution B.exhibition
C.separation D.examination
38.The researchers' conclusion was based on a study of the African elephant's________.
A.DNA B.height
C.weight D.population
39.What are Alfred Roca's words mainly about?
A.The conservation of African elephant.
B.The purpose of studying African elephant.
C.The way to divide African elephants into two units.
D.The reason for the distinction of African elephants.
40.Which of the following can be the best title for the passage?
A.Naturalist' Beliefs about Elephants
B.Amazing Experiments about Elephants
C.An Unexpected Finding about Elephants
D.A Long Scientific Debate about Elephants
B
What will power your house in the future?Nuclear,wind,or solar power?According to scientists at the Massachusetts Institute of Technology(MIT)in the US,it might be leaves—but artificial(人造的)ones.
Natural leaves are able to change sunlight and water into energy.It is known as photosynthesis(光合作用).Now researchers have found a way to imitate this seemingly simple process.
The artificial leaf developed by Daniel Nocera and his colleagues at MIT can be seen as a special silicon chip with catalysts(催化剂).Similar to natural leaves,it can split water into hydrogen and oxygen when put into a bucket of water.The hydrogen and oxygen gases are then stored in a fuel cell,which uses those two materials to produce electricity,located either on top of a house or beside the house.
Though the leaf is only about the shape of a poker card,scientists claimed that it is promising to be an inexpensive source of electricity in developing countries.“One can imagine villages in India and Africa not long from now purchasing an affordable basic power system based on this technology,”said Nocera at a conference of the American Chemical Society.
The artificial leaf is not a new idea.The first artificial leaf was invented in 1997 but was too expensive and unstable for practical use.The new leaf,by contrast,is made of cheap materials,easy to use and highly stable.In laboratory studies,Nocera showed that an artificial leaf prototype(原型)could operate continuously for at least 45 hours without a drop in activity.
The wonderful improvements come from Nocera's recent discovery of several powerful,new and inexpensive catalysts.These catalysts make the energy transformation inside the leaf more efficient with water and sunlight.Right now,the new leaf is about 10 times more efficient at carrying out photosynthesis than a natural one.Besides,the device can run in whatever water is available;that is,it doesn't need pure water.This is important for some countries that don't have access to pure water.
With the goal to “make each home its own power station” and “give energy to the poor”,scientists believe that the new technology could be widely used in developing countries,especially in India and rural China.
41.Which of the following orders correctly shows how the artificial leaf is used to produce electricity?
a.artificial leaves split water into hydrogen and oxygen
b.the hydrogen and oxygen gases are stored in a fuel cell
c.the artificial leaves are put in water
d.the fuel cell uses hydrogen and oxygen to produce electricity
A.c,b,a,d B.c,a,b,d
C.b,c,a,d D.c,a,d,b
42.Which of the following statements about new artificial leaves is NOT WRONG according to the article?
A.They are inexpensive but unstable.
B.They are as efficient at carrying out photosynthesis as natural leaves.
C.They can work only in pure water.
D.They need several catalysts to help them work efficiently.
43.The purpose of the scientists at MIT in developing the new artificial leaf is to________.
A.build up more power stations in the world
B.provide cheaper energy for developing countries
C.offer people in developing countries access to pure water
D.gain a deeper understanding of the photosynthesis process
44.The main idea of this passage is ________.
A.an introduction to the history of artificial leaves
B.an invention copying photosynthesis
C.giving energy to the poor
D.a mixture of water power and solar energy
45..The underlined word “imitate” in Paragraph 2 can be replaced by “________”.
A.produce B.hold C.prevent D.copy
答案与解析
1.答案 C [考查动词的非谓语形式。appreciate后接动名词作宾语;第二空为现在分词形式作状语。句意:我要离开至少一年的时间,时不时收到你的信告诉我大家的现状,我会很高兴的。]
2.答案 B [考查介词短语的辨析。according to根据;regardless of 不管;不顾;in addition to除……之外;in terms of 就……而言。句意:这家特校接受所有残疾的学生,不管他们的教育水平和背景。 ]
3.答案 C [考查状语从句的连接词。so that 以便于;为了,引导目的状语从句,复合句意及句子结构,故C项正确。句意:必须采取措施以避免这种灾难不再发生。because因为,引导原因状语从句;even if 即使,引导条件状语从句;as因为;由于,引导原因状语从句。]
4.答案 C [考查动词时态及语态。由语境可知,桥还在修理中,故用进行时的被动形式。句意:——我们为什么不走那条路以节约时间呢?——通往那条路的桥还在修理中。]
5.答案 B [考查动词时态及语态。由时间状语in the last few years可知,空格处应用现在完成时,且films 与produce 之间为逻辑上的动宾关系,故用完成时的被动形式。句意:在过去的几年里,全世界共制作了数千部电影。]
6.答案 A [考查名词词义辨析。effect 影响;结果;concern关心;担心;protection保护;attitude态度。the effect on sth 对……的影响。句意:举行了一次会议来讨论日本的核辐射对这一地区人们的生活的影响。]
7.答案 A [考查动词的时态。die out灭绝。由so we must take measures to protect them可知A项正确。句意:许多野生动物正在灭绝,因此,我们必须采取措施来保护它们。]
8.答案 D [考查语境中冠词的用法。可数名词单数前可以加a/an /the来表达泛指概念;in danger of 有……的危险,为短语搭配形式,danger前不加冠词,故D项正确。句意:根据调查报告显示,鳄鱼正面临灭绝的危险。]
9.答案 B [考查介词短语的辨析。at the risk of 冒着……的危险;at the cost of 以……为代价;at the end of在……的末端/尽头;at the mercy of听凭……的处置。句意:尽管存在金融危机,但许多发展中国家并不愿意以破坏环境为代价来追求经济的发展。]
10.答案 D [考查动词词义辨析。contain包含,强调宾语是主语的组成部分;possess拥有;share 分享;include包含;包括……在内。由语境可知D项正确。句意:良好的饮食结构中钙的来源主要包括绿叶蔬菜、鱼、酸奶、豆腐及适合早餐的谷类食物。]
11.答案 D [考查动词的时态及语态。由What is that noise?
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