What is the author’s attitude towards the 21st century、

试卷相关题目

• 1It can be inferred from the ending paragraph that

  A.Biotechnology will find fuel that is dug up from underground.

  B.Understanding of cells succeeded in preventing humans from aging.

  C.The vaccines have been developed to curb pandemic infections.

  D.B.Understanding of cells succeeded in preventing humans from aging.C.The vaccines have been developed to curb pandemic infections.D.There still lacks adequate technology to handle climate chang

  开始考试点击查看答案
• 2According to the author, biological technology in the 21st century will

  A.speed up the aging population.

  B.aggravate the climate change.

  C.keep new fatal infections in check.

  D.understand the vast univers

  开始考试点击查看答案
• 3According to the author, what distinguishes the 21st century from the 20th century、

  A.biological technology

  B.physical technology

  C.computers and the internet

  D.modern transport links

  开始考试点击查看答案
• 4The word “benign” (Line 2, Paragraph 2) most probably means

  A.harmful

  B.beneficial

  C.powerful

  D.frightening

  开始考试点击查看答案
• 5Which of the following is true according to the text、

  A.Most of the celebrities gain a great deal from taking naps.

  B.Taking naps may reduce the incidence of heart attacks at work.

  C.Dr. Trichopoulos’ study of napping conflicts with his previous study on diet.

  D.People should sacrifice napping in order to be successful in their career.

  开始考试点击查看答案
• 6What can we infer from the first three paragraphs、

  A.Mathematical methods help search engines become more popular.

  B.The web information seems to be dominated by Google alone.

  C.Sociologists argue that search engines alleviate the inequality of websites.

  D.The ability of search engines is dependent on using algorithms.

  开始考试点击查看答案
• 7According to the text, the importance of a page is determined by

  A.controlling other pages.

  B.the number of its links to other pages.

  C.using mathematical methods.

  D.the structure of the web itself.

  开始考试点击查看答案
• 8The foremost reason why Google is successful is no other than

  A.its magical ability.

  B.its higher page rankings.

  C.complexity of its algorithms.

  D.its heavy web traffic.

  开始考试点击查看答案
• 9Santo Fortunato and his colleagues seem to suggest that

  A.fair effect is created by increasing traffic to less well known sites.

  B.popular websites are made more fashionable by search engines.

  C.the situation in favor of popular pages has become more serious.

  D.Popular pages are more likely to be discovered by random links.

  开始考试点击查看答案
• 10The author seems to be mainly concerned with

  A.prejudice against less popular websites.

  B.equality of search engines.

  C.key to Google’s success.

  D.negative effects of search engines.

  开始考试点击查看答案