您現(xiàn)在的位置: 跨考網(wǎng)考研專業(yè)課正文

考博英語閱讀理解(二)_跨考網(wǎng)

最后更新時間:2008-01-11 10:05:36
輔導課程:暑期集訓 在線咨詢
復習緊張,焦頭爛額?逆風輕襲,來跨考秋季集訓營,幫你尋方法,定方案! 了解一下>>
?

Passage 3

??? In science, a theory is a reasonable explanation of observed events that are related. A the-ory often involves an imaginary model that helps scientists picture the way an observed event could be produced. A good example of this is found in the kinetic molecular theory, in which gases are pictured as being made up of many small particles that are in constant motion.

??? A useful theory, in addition to explaining past observations, helps to predict events that have not as yet been observed. After a theory has been publicized, scientists design experi-merits to test the theory. If observations confirm the scientists' predictions, the theory is sup-ported. If observations do not confirm the predictions, the scientists must search further. There may be a fault in the experiment, or the theory may have to be revised or rejected.

????? Science involves imagination and creative thinking as well as collecting information and performing experiments. Facts by themselves are not science. As the mathematician Jules Henri Poincare said: "Science is built with facts just as a house is built with bricks, but a collection of facts cannot be called science any more than a pile of bricks can be called a house."

????? Most scientists start an investigation by finding out what other scientists have learned about a particular problem. After known facts have been gathered, the scientist comes to the part of the investigation that requires considerable imagination. Possible solutions to the problem are

formulated. These possible solutions are called hypotheses.

In a way, any hypothesis is a leap into the unknown. It extends the scientist's thinking beyond the known facts. The scientist plans experiments, performs calculations, and makes ob-servations to test hypotheses. For without hypotheses, further investigation lacks purpose and direction. When hypotheses are confirmed, they are incorporated into theories.

11. The word "this" in the 3rd sentence in paragraph 1 refers to ______.

???? A) a good example?????????????? B) an imaginary model

???? C) the kinetic molecular theory??? D) an observed event

12. Bricks are mentioned in the 3rd paragraph to indicate how ____.

????? A) mathematicians approach science

????? B) building a house is like performing experiments

????? C) science is more than a collection of facts

????? D) scientific experiments have led to improved technology

?13. In the last paragraph, the author refers to a hypothesis as "a leap into the unknown" in or-????? der to show that hypotheses ______.

????? A) are sometimes ill-conceived???? B) can lead to dangerous results

????? C) go beyond available facts????? D) require effort to formulate

?14. What is a major function of hypotheses as implied in the last paragraph7

????? A) Sifting through known facts.

????? B) Communicating a scientist's thoughts to others.

????? C) Providing direction for scientific research.

????? D) Linking together different theories.

?15. Which of the following statements is supported by the passage?

????? A) Theories are simply imaginary models of past events.

????? B) It is better to revise a hypothesis than to reject it.

????? C) A scientist's most difficult task is testing hypotheses.

????? D) A good scientist needs to be creative.

???? B) Education systems need to be radically reformed.

???? C) Going to school is only part of how people become educated.

???? D) Education involves many years of professional training.

20. The passage is organized by ___

???? A) listing and discussing several educational problems

???? B) contrasting the meanings of two related concepts

???? C) narrating a story about excellent teachers

???? D) giving examples of different kinds of schools

跨考考研課程

班型 定向班型 開班時間 高定班 標準班 課程介紹 咨詢
秋季集訓 沖刺班 9.10-12.20 168000 24800起 小班面授+專業(yè)課1對1+專業(yè)課定向輔導+協(xié)議加強課程(高定班)+專屬規(guī)劃答疑(高定班)+精細化答疑+復試資源(高定班)+復試課包(高定班)+復試指導(高定班)+復試班主任1v1服務(高定班)+復試面授密訓(高定班)+復試1v1(高定班)
2023集訓暢學 非定向(政英班/數(shù)政英班) 每月20日 22800起(協(xié)議班) 13800起 先行階在線課程+基礎階在線課程+強化階在線課程+真題階在線課程+沖刺階在線課程+專業(yè)課針對性一對一課程+班主任全程督學服務+全程規(guī)劃體系+全程測試體系+全程精細化答疑+擇校擇專業(yè)能力定位體系+全年關鍵環(huán)節(jié)指導體系+初試加強課+初試專屬服務+復試全科標準班服務

①凡本網(wǎng)注明“稿件來源:跨考網(wǎng)”的所有文字、圖片和音視頻稿件,版權均屬北京尚學碩博教育咨詢有限公司(含本網(wǎng)和跨考網(wǎng))所有,任何媒體、網(wǎng)站或個人未經(jīng)本網(wǎng)協(xié)議授權不得轉載、鏈接、轉帖或以其他任何方式復制、發(fā)表。已經(jīng)本網(wǎng)協(xié)議授權的媒體、網(wǎng)站,在下載使用時必須注明“稿件來源,跨考網(wǎng)”,違者本網(wǎng)將依法追究法律責任。

②本網(wǎng)未注明“稿件來源:跨考網(wǎng)”的文/圖等稿件均為轉載稿,本網(wǎng)轉載僅基于傳遞更多信息之目的,并不意味著再通轉載稿的觀點或證實其內(nèi)容的真實性。如其他媒體、網(wǎng)站或個人從本網(wǎng)下載使用,必須保留本網(wǎng)注明的“稿件來源”,并自負版權等法律責任。如擅自篡改為“稿件來源:跨考網(wǎng)”,本網(wǎng)將依法追究法律責任。

③如本網(wǎng)轉載稿涉及版權等問題,請作者見稿后在兩周內(nèi)速來電與跨考網(wǎng)聯(lián)系,電話:400-883-2220