题目内容
3.Why should mankind explore space?Why should money,time and effort be spent exploring and researching something with so few apparent benefits?Why should resources be spent on space rather than on conditions and people on Earth?These are questions that,understandably,are very often asked.Perhaps the best answer lies in our genetic makeup as human beings.What drove our ancestors to move from the trees into the plains,and on into all possible areas and environments?The wider the spread of a species,the better its chance of survival.Perhaps the best reason for exploring space is this genetic tendency to expand wherever possible.
Nearly every successful civilization has explored,because by doing so,any dangers in surrounding areas can be identified and prepared for.Without knowledge,we may be completely destroyed by the danger.With knowledge,we can lessen its effects.
Exploration also allows minerals and other potential resources to be found.Even if we have no immediate need of them,they will perhaps be useful later.Resources may be more than physical possessions.Knowledge or techniques have been acquired through exploration.The techniques may have medical applications which can improve the length or quality of our lives.We have already benefited from other spin-offs including improvements in earthquake prediction,in satellites for weather forecasting and in communications systems.Even non-stick pans and mirrored sunglasses are by-products of technological developments in the space industry!
While many resources are spent on what seems a small return,the exploration of space allows creative,brave and intelligent members of our species to focus on what may serve to save us.While space may hold many wonders and explanations of how the universe was formed or how it works,it also holds dangers.The danger exists,but knowledge can help human being to survive.Without the ability to reach out across space,the chance to save ourselves might not exist.
While Earth is the only planet known to support life,surely the adaptive ability of humans would allow us to live on other planets.It is true that the lifestyle would be different,but human life and cultures have adapted in the past and surely could in the future.
29.Why does the author mention the questions in Paragraph l?B
A.To express his doubts.
B.To introduce points for discussion.
C.To compare different ideas.
D.To describe the conditions on Earth.
30.What is the reason for exploring space based on Paragraph 2?A
A.Humans are nature-born to do so.
B.Humans have the tendency to fight.
C.Humans may find new sources of food.
D.Humans don't like to stay in the same place.
31.The underlined word"spin-offs"in Paragraph 4 probably refers toC.
A.survival chances
B.potential resources
C.unexpected benefits
D.physical possessions
32.What makes it possible for humans to live on other planets'?B
A.Our genetic makeup.
B.The adaptive ability of'humans.
C.Resources on the earth.
D.By-products in space exploration.
分析 文章讲述了人类对太空的探索.人类的天性决定了我们一定会探索太空,从已经取得的成绩看,效果不错.此外,探索太空也是对人类的未来负责,可以帮我们寻找新能源,确保了人类的生存.
解答 29.B 写作结构题.文章用设问的方式是为了引出话题:人类探索太空的原因.故选B.
30.A 细节理解题.文章第二段说Perhaps the best answer lies in our genetic makeup as human beings人类探索太空原因存在与人类的基因中.故选A.
31.C 猜测词意题.划线前面说The techniques may have medical applications which can improve the length or quality of our lives人类已经利用太空技术改善了我们的生活;后面说including improvements in earthquake prediction,in satellites for weather forecasting and in communications systems.Even non-stick pans and mirrored sunglasses are by-products of technological developments in the space industry人类还从太空技术中获得了很多附带的好处.故选C.
32.B 细节理解题.文章最后一段说surely the adaptive ability of humans would allow us to live on other planets人类适应环境的能力让我们可以生活在别的星球上.故选B.
点评 阅读理解题测试考生在阅读基础上的逻辑推理能力,要求考生根据文章所述事件的逻辑关系,对未说明的趋势或结局作出合理的推断;或根据作者所阐述的观点理论,对文章未涉及的现象、事例给以解释.考生首先要仔细阅读短文,完整了解信息,准确把握作者观点.
| A. | promised | B. | had promised | C. | would promise | D. | promises |
You may have heard adults say they can't get going in the morning without a cup of coffee.One reason why they may feel that way is that coffee contains caffeine,a substance known to improve and increase energy.Caffeine occurs naturally in coffee,tea,and cocoa beans,which are used to make chocolate.But now food makers are adding caffeine to many products,from popcorn and potato chips to water."It's possible for all of this caffeine consumption to add up and become dangerous,"says Virginia Stallings,a doctor at the Children's Hospital of Philadelphia.
Studies show that too much caffeine can cause inability to sleep,and a racing heartbeat.What's more,caffeine is habit-forming.Those who consume it regularly and stop suddenly may experience headaches and feel tired.
One of the biggest problems is the large amount of caffeine added to so-called energy drinks,like Red Bull.A 12-ounce can of cola has about 35milligrams of caffeine.A similar serving of Red Bull contains more than triple (三倍) that amount.Emergency-room visits related to energy-drink consumption were up from 10,068visits in 2007to 20,783in 2011.
Teenagers should be aware of caffeine's effects on health and on the brain.Take,for example,teenagers who consume caffeine to stay awake and study for a test.The effect?Research shows they may remember less of what they just studied.
So,what can be done to protect young people from the harmful effects of caffeine?Michael Jacobson of the Center for Science in the Public Interest,says the FDA needs to set limits on caffeine,especially in energy drinks.The amount of caffeine should be printed on food labels to warn consumers.Doctors say kids should avoid caffeine.If you need extra energy,try these natural methods instead:eating right,exercising,and getting plenty of sleep.
32.According to the text,it's dangerous to add moreDto drinks.
| A.tea | B.chocolate | C.yoghurt | D.caffeine |
A.Draw up a project about physical exercise.
B.Forbid kids from having water with caffeine.
C.Create a set of standards on caffeine products.
D.Not allow energy drinks to appear in the market.
34.What can we learn from the text?B
A.Cola has much more caffeine than Red Bull.
B.More people are suffering from energy drinks.
C.Drinking enough Red Bull can help sleep well.
D.Having too much caffeine can improve memory.
35.The text is written mainly for thoseB.
| A.who often have headaches | B.who are caffeine-product lovers |
| C.who usually feel tired | D.who are food and drink makers |
| A. | deduce | B. | induce | C. | interfere | D. | force |