问题 单项选择题

为了监视索引的空间使用效率,可以首先分析该索引的结构,使用()语句,然后查询INDEX_STATE视图。

A.SELECT INDEX … VALIDATE STRUCTURE

B.ANALYZE INDEX … VALIDATE STRUCTURE

C.UPDATE INDEX … VALIDATE STRUCTURE

D.REBUILD INDEX … VALIDATE STRUCTURE

答案

参考答案:B

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第二节:(共5小题;每小题2分,满分10分)

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中的两项为多途选项。

76 He is often described as the man who has saved more lives than any other person in history. Norman Borlaug is considered the father of what has been called the Green Revolution. His ideas about agriculture in creased crop production and ended hunger are welcomed in many nations.77

Norman Borlaug was born ninety-four years ago on a farm in the American state of IowA.In the middle of the twentieth century, world population was expanding faster than food production.78

Norman Borlaug was an agricultural researcher at the International Maize and Wheat Improvement Center In Mexico. 79 Those methods increased the amount harvested by three times. He later repeated this success in India, Pakistan and Africa.

His methods of farming saved millions of people who would have starved to death. Norman Borlaug was given the Nobel Peace Prize for his efforts in 1970.

Mr. Borlaug is still urging experts think about the needs of people around the world .80 He says it has the power to destroy most of the wheat being grown around the world.

A. Experts said many people in developing countries would face starvation.

B. The person who is making a difference is known around the world.

C. His efforts make it impossible for people all over the world to starve any more.

D. He developed methods of growing wheat.

E. His latest concern is a disease in wheat called UG99.

F. Mr. Borlaug continues to be a leader among agricultural researchers.

G. The world’s population growth is faster than crop increase.

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