题目
题型:不详难度:来源:
Asteroids are bigger versions of the meteoroids (流星) that race across the night sky. Most orbit the sun far from Earth and don’t threaten us. But there are also thousands whose orbits put them on a collision course with Earth.
Buy $50 million worth of new telescopes right now. Then spend $100 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one, the scientists say, we’ll have a way to change its course.
Some scientists favor pushing asteroids off course with nuclear weapons. But the cost wouldn’t be cheap.
Is it worth it? Two things experts consider when judging any risk are: 1) How likely the event is; and 2) How bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike Earth once every 500,000 years. Sounds pretty rare-but if one did fall, it would be the end of the world. If we don’t take care of these big asteroids, they’ll take care of us,” says one scientist. “It’s that simple.”
The cure, though, might be worse than the disease. Do we really want fleets of nuclear weapons sitting around on Earth? “ The world has less to fear from doomsday (毁灭性的) rocks than from a great nuclear fleet set against them,” said a New York Times article.
66. What does the passage say about asteroids and meteoroids?
A.They are heavenly bodies different in composition.
B. They are heavenly bodies similar in nature.
C. There are more asteroids than meteoroids.
D. Asteroids are more mysterious than meteoroids.
67. What do scientists say about the collision of an asteroid with Earth?
A. It is very unlikely but the danger exists.
B. Such a collision might occur once every 25 years.
C. Collisions of smaller asteroids with Earth occur more often than expected.
D. It’s still too early to say whether such a collision might occur.
68. What do people think of the suggestion of using nuclear weapons to alter the course of asteroids?
A. It sounds practical but it may not solve the problem.
B. It may create more problems than it might solve.
C. It is a waste of money because a collision of asteroids with Earth is very unlikely.
D. Further research should be done before it is proved applicable.
69. We can conclude from the passage that ________
A. while pushing asteroids off course nuclear weapons would destroy the world.
B. asteroids racing across the night sky are likely to hit Earth in the near future.
C. the worry about asteroids can be left to future generations since it is unlikely to happen in our lifetime
D. workable solutions still have to be found to prevent a collision of asteroids with Earth.
70. Which of the following best describes the author’s tone in this passage?
A. Optimistic B. Critical C. Objective D. Arbitrary
答案
小题1:B
小题2:A
小题3:B
小题4:D
小题5:C
解析
核心考点
试题【Unless we spend money to spot and prevent asteroids (小行星) now, one might crash i】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
III 阅读(共两节,满分40分)
第一节阅读理解(共15小题;每小题2分,满分30分) 阅读下列短文,
从每题所给的A、B、C和D项中,选出最佳选项,并在答题卡上将该项涂黑。
China has now mapped out plans for its next four launches in the Shenzhou program on the next flight. But one conclusion seems to have escaped most reports in the aerospace media. The flight of Shenzhou 7 could be timed to coincide with the Beijing Olympics. Plans for the 2008 Summer Olympics call for the events to be held between the 8th and 24th of August. It"s reasonable to expect that China will use the event to promote its achievements before the world, and human spaceflight is China"s most significant recent breakthrough.
Shenzhou 7, China"s next manned space mission, was originally advertised for 2007. This fit into the pattern of staging a two-year gap between crewed Shenzhou missions, which have previously launched in 2003 and 2005. But Chinese media statements have recently amended this to 2008. Chinese media have reported that while the overall program is going well, more time is needed to work on the spacesuit that will be used on this flight to stage China"s first spacewalk. It"s possible that Chinese engineers want to make best preparations for this complex mission.
China could intend to carry out the mission of Shenzhou 7 just as media attention is focused on the lead-up to the Olympics. The crew of the flight, and possibly China"s other flown astronauts, could then take part in the opening ceremony. China has previously feted her space travellers in great celebrations, such as the Hong Kong event that saw Yang Liwei singing with actor Jacky Chan.
China has also suggested that the activity will be carried out by a single astronaut, and has indicated that half an hour is a rough estimate of the planned time for the spacewalk. China is apparently following suit, probably for the same reasons of conservative mission planning and safety.
41. From the first paragraph we can infer that ________.
A. China hasn’t made its plan for the Beijing Olympics
B. The new Shenzhou program are known to all the reporters
C. China has planned to send up Shenzhou 7 in 2008
D. Beijing Olympics will be held during the flight of Shenzhou 7
42. China has decided to carry out its human spaceflight in 2008 in order to ______.
A. make the Beijing Olympics more interesting
B. show its great achievements to the world
C. prove that China is a developed country
D. introduce its science and technology to the world
43. Which one of the following is WRONG according to this passage?
A. China sent its first manned spacecraft in October of 2003.
B. Chinese engineers want to make more preparations for Shenzhou 7.
C. The spacesuit for the flight of Shenzhou 7 hasn’t been prepared well.
D. Two Chinese astronauts walked in space in 2003.
44. The underlined word “amended” in the passage has a similar meaning to ______.
A. improve B. change C. expect D. decide
45. What would be the best title for this passage?
A. The Beijing Olympics. B. The Shenzhou Olympics.
C. China’s Shenzhou Program. D. Spacewalk in 2008.
Technology has utterly transformed our ability to communicate with each other. Linking to each other both literally and figuratively, many of us connect through cell phones, email, instant messaging, blogs, and networking web sites, yet we may be less connected to each other than we think.
According to a study, Americans are becoming increasingly socially isolated. The study reveals, for example, that one quarter of Americans say that they have no one to discuss important personal issues with, and that the number of close friends that American have has dropped from three to two. Meanwhile, the Boston Globe reports that this spreading isolation is experienced more sharply among those with less education, people of color, and older Americans. Unsurprisingly, those who are young, white, and well educated tend to have stronger social networks.
From my own experience I have to say that I’ve never felt more connected, thanks to a web of friends, family, and colleagues. One of my closest friends is someone I met through an online discussion group who lives hundreds of miles away from me. We have met face-to-face only twice, yet our regular electronic correspondence and cell phone calls sustain our close friendship. And, speaking of blogging, my blog has introduced me to people I would never have met otherwise and has led to enduring and important friendships.
On the other hand, I recently saw a scene unfold that proved to me how deeply disconnected we as Americans have become. I had just wrapped up a presentation on mediation at a family therapy(治疗) center. As I was leaving, I noticed a mother and her teenage son who had just completed their session with their family therapist(临床医学家). After making their next appointment, they both took out their cell phones, placed calls, and began loud conversations with whoever was on the other end. I walked out behind them to the parking lot to my car. They both jumped into their SUV, and, as I saw them drive off, they were still talking on their cell phones.
But, alas, not to each other.
51. What does the passage lead you to believe?
A. Americans are more socially connected today.
B. Americans are more socially isolated today.
C. Technology plays a bigger role in American society.
D. Americans don’t make good use of technology.
52. Which of the following has nothing to do with the isolation among Americans?
A. Age. B. Education. C. Skin color. D. Sex.
53. The author himself _______.
A. has a wider range of friends because of technology
B. has failed to take advantage of technology
C. can only find true friendship through the Internet
D. can’t make true friends in actual life
54. What is true about the mother and son in the passage?
A. They came for therapy in the same car.
B. They were quite close to each other.
C. There was not much communication between them.
D. They preferred talking to each other on cell phones.
55. The author probably feels ________ with the mother and son.
A. puzzled B. disappointed C. amused D. surprised
Science。And technology students in China and the US have a1ong way to go before they call develop a deep understanding of scientific reasoning,researchers have found.
As part of a research to compare science education in China and the US,LeiBao,a professor
from the Departmenr of Physics of the Ohio State University, gave 5,760;freshmen in three US and four Chinese univeristies two tests to evaluate content knowledge and another to assess scientific reasoning
Though Chinese students did better than their US counterparts in the first two tests that
Emphasized on learning facts,both groups “scored relatively poorly”on the third test,designed to
Assess their ability ot systmatically explore a problem , the results showed.
Lei Bao said that the finding challenges conventional wisdom,which holds that teaching
science facts will improve students’reasoning ability.“Our study shows that ,contrary to what many people would expect,even when students are thoroughly taught the facts,they don’t necessarily develop the reasoning skills they need io succeed.’’IBao said:‘“Because students need both knowledge and reasoning,we need to explore teaching methods that target both.”
‘The current education systems and asessment of China and the US do not emphasize on deep understanding of scientific reasoning in the disciplines of science;technology,engineering and mathematics(STEM),the study concluded.
Bao explained that reasoning is good skill for everyone topossess-not just scientists and
engineers:The general public also need good reasoning skills in order to correctly interpret
scientific findings and think rationally.STEM students need to excael at scientific reasoning in order to handle open-ended real-world tasks in their future careers in science and engineering.
How to boost scientific reasoning?The study suggests that educators must go beyond teaching science facts if they hope to boost students’reasoning ability.Bao points to inquiry-based leaming.where students work in groups,question teachers and design their owu investigations.This teaching technique is growing in popularity worldwide.
67.According to the research,we know that
A.Chinese students and their US counterparts did poorly in the first two tests
B.Chinese students did beaer than their US counterparts in alI the three tests
C.Chinese students did beaer than their US counterparts in the first two tests ‘
D.US students did beaer than their Chinese counterparts in the third test
68.The conventional wisdom holds that .
A.the more facts~tudents are taught,the more reasoning skills they will acquire
B.the general public also need reasoning skills to interpret scientific findings
C.to boost students’reasoning ability,educators must explore teaching methods
D.the current education Systems are harmful to improve students’reasoning ability
69.Based on the study,what will be done to improve students’reasoning ability?
A.To improve teaching techniques. B.To better students’learning conditions.
C.To teach students more science facts. D.To offer students more tests.
70.The underlined phrase“excel at”in Paragraph 6 probably means .
A.be worse at B.be beaer at C.be enthusiastic about D.be inferior to
71.Which of the following is correct according to the passage?
A.Little needs to be done to develop students’reasoning ability in the US.
B.Only scientists and engineers need reasoning abilities.
C.Two tests were carried out to evaluate students’scientific reasoning.
D.Inquiry-based learning is a good way to boost students’reasoning ability.
Ⅲ.阅读理解 (40分)
New York was very proud of its electric trolleys(无轨电车) at the turn of the century. They were the latest way to get around. But Mary Anderson, who visited New York from her native Birmingham, Alabama, 1902, did not like them at all. She thought they were not safe.
It was not that the drivers were bad. It was the windshields (挡风玻璃). In those days, drivers rubbed their windshields with damp tobacco. This was supposed to help off rain and snow. But it did not work too well. Anderson watched as the trolley drivers struggled to see out of their windshields, and came up with an idea.
Back in Alabama, Anderson made the first windshield wiper by fixing handle (把手)to a rubber blade (片). This, in turn, was fixed to the windshield. The drivers had to turn the handle back and forth by hand to make the blade wipe off the rain. But it worked. And travel in bad weather was made a little safer for everyone.
36.Which of the following best gives the main idea of this passage?
A.How Mary Anderson visited New York?
B.How drivers cleaned their windshields?
C.How the first windshield wiper came into being?
D.How windshield wiper was made?
37.Though New Yorkers had great pride in electric trolleys, Mary disliked them because she thought ______________.
A. they were dangerous B.they kept off rain and snow
C.their windshields were not good D.their drivers were inexperienced
38.To stop rain and snow coming on the windshields, a trolley driver had to _______.
A. work hard B.see out of them clearly
C.struggle in the trolleys D.use damp tobacco to clean them
39.Which of the following is NOT true according to the passage?
The windshield wiper helped keep off the rain.
The windshield wiper was turned by the driver.
The rubber blade was fixed to the windshield.
The windshield wiper was made in Alabama.
In late March, Southwest University became the first school in China to open a 24-hour hotline providing suicide-prevention counseling.
College suicide is a heart-breaking and argumentative topic.Chinese college students have long been the focus of public attention: their youth, education and, most importantly, bright futures make them the envy of society.
However, in recent years, we"ve read more reports of student suicides.Perhaps that"s simply because of society"s attention with youth.But it could also signify the increasing troubled mental state of college students.
Many studies have sought to find out the causes of student suicides.Not surprisingly, the top factors usually include psychological and physical sickness, emotional trouble and peer pressure.Despair about their futures is also quickly becoming a leading factor: many students say they feel hopeless and confused about the direction of their careers in a crowded job market.
Thankfully, more and more universities and colleges are providing counseling services to address students" mental and psychological problems.These at least offer some comfort to students facing tough job prospects and personal difficulties.
From appointing in-house student counselors to setting up hotlines and recruiting students to help their troubled peers, many universities are making efforts to fight student depression.There is no denying that much remains to be done, but such efforts are already working, helping students and saving lives.
However, the most important front in this battle lies with the students themselves.Whatever efforts school officials make, it is up to students to realize their problems and ask for help.Unfortunately, many students considering suicide refuse to seek help.By shutting themselves away, they can easily fall into vicious cycles (恶性循环), becoming even more easily hurt to personal
difficulties and the pressures of the outside world.
While establishing better on-campus psychological education and outreach programs as a step forward, students themselves must actively reach out for help.These dangers are a reality for every
student, not only those who feel confused and depressed.
63.Why are there so many students that commit suicide?
A.Because of psychological and physical sickness.?
B.Because they feel hopeless and confused about their future.
C.Because of the emotional trouble.
D.All of the above.
64.According to the article, all of the following are right except ____.
A.No university in China had a whole day hotline about suicide-prevention before March.
B.Many people envy the college students their bright futures.
C.The students who feel confused and depressed may need psychological education.
D.The problems of student suicides indicate the increasing troubled mental state of youths.
65.The key to avoid student suicides is that ____.
A.parents communicate with their children and understand them
B.colleges and universities offer more help to students
C.students themselves realize their problems and seek help from others
D.friends give more comfort and show more understanding to the problem students
66.Which of the following can be the main idea for this article?
A.Help is at hand for suicidal students.
B.More college students commit suicide.
C.How can students avoid committing suicide?
D.Why do college students feel depressed?
最新试题
- 1下列四句诗填入横线上恰当的一句是[ ] 春天的大地到处生机勃勃。花园里开满了鲜花,红的、黄的、白的、紫的……五
- 2下列物体中,既有动能又有势能的是 [ ] A.在平地上滚动的足球
- 3我国人口增长的突出特点是A.人均寿命长,老年人口多B.年龄构成轻,育龄妇女多C.生育指标紧,新生婴儿少D.人口基数大,人
- 4已知某项工程由甲、乙两队合做12天可以完成,共需工程费用13800元,乙队单独完成这项工程所需时间是甲队单独完成这项工程
- 5被誉为“江南煤都”的萍乡,已探明煤炭资源可开采量为4.01亿吨,经过100多年大规模机械化开采后,现已累计开采原煤2.8
- 6如图所示,ABC为等腰三棱镜,顶角A的角度为α,一条单色光线从AB边射入,进入三棱镜内的光线与底边BC平行,三棱镜的出射
- 7阅读下面的文字,完成问题。 中国瓷器艺术 中国是世界上最早发明瓷器的国家。英语的“China"’既是瓷器的意思,又指中
- 8分析下列图表,回答问题:材料一美国福特汽车零部件产地分布表(1)从上表中可以看出世界经济呈现一种什么趋势?这种趋势对经济
- 9如图,在△ABC中,AB=AD=DC,∠BAD=20°,则∠C= °.
- 10Vitamin D helps our bodies make a special chemical, and this
热门考点
- 1下面分别是北宋“理学五子”籍贯分布图和明朝儒学家籍贯分布图。造成这种变化的主要原因是 A.西学东渐的影响B.资本主义萌
- 2近年来,无论是最美乡村教师,最美乡村医生,还是最美妈妈、最美司机,一系列平凡人的非凡事迹,无不深深触动我们的心灵,令我们
- 3下列常用词语的字音完全正确的一项是A.谥号shì 玉玺xǐ纨wán绔kùB.敕chì令骸hé骨橹棹zhàoC.手癣xuǎ
- 4IV. 写作(共两节,满分40分)第一节:基础写作(共1小题,满分15分)下图是我国近10年私人汽车拥有情况。[写作内容
- 5如图,在四棱柱中,已知平面平面且,.(1)求证:(2)若为棱上的一点,且平面,求线段的长度
- 6从哲学角度分析,下图所讽刺的做法违背了( )。A.改造世界必须发挥主观能动性的原则B.归纳与演绎相结合的原则C.两点
- 7清朝统治者加强对人民思想控制主要是通过A.焚书坑儒B.“罢黜百家,独尊儒术”C.八股取士 D.大兴文字狱
- 8某同学不小心划破手指并少量出血,在伤口自动止血中起主要作用的血细胞是( )A.红细胞B.白细胞C.血小板D.吞噬细胞
- 9将函数f(x)=sin(2x-π3)的图象左移π3,再将图象上各点横坐标压缩到原来的12,则所得到的图象的解析式为(
- 10短文改错 Tom and Dick are next door friend who both work in