What can we infer from the first three paragraphs、

试卷相关题目

• 1What is the author’s attitude towards the 21st century、

  A.carefree

  B.detached

  C.optimistic

  D.dubious

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• 2It 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

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• 3According 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

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• 4According 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

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• 5The word “benign” (Line 2, Paragraph 2) most probably means

  A.harmful

  B.beneficial

  C.powerful

  D.frightening

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• 6According 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.

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• 7The 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.

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• 8Santo 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.

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• 9The 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.

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• 10The case of Mrs. Pryce is mentioned to demonstrate that

  A.children need more concern and care than the elderly.

  B.more children are suffering from cancer nowadays.

  C.students are more inclined to be diagnosed with cancer.

  D.she is so unfortunate as to lose her daughter.

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