【題目】No more than 15 scientists __________ the South Pole till now.

A.visitedB.had visitedC.have visitedD.visit

【答案】C

【解析】

考查時態(tài)。句意：到目前為止，造訪過南極的科學(xué)家不超過15人。根據(jù)時間狀語“till now”可知本題應(yīng)該用現(xiàn)在完成時，故C項正確。

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：

【題目】What has the man been doing?

A. Writing something. B. Repairing his pen. C. Shopping.

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】--I’m surprised to hear that Sue and Paul have ________.

A. broken up B. finished up

C. divided up D. closed up

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】It’s no use _________ without thinking.

A.learnB.to learnC.having learnedD.learning

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】It was said that the two parties had not ____an agreement on the issues discussed.

A. reached B. treated

C. assessed D. accepted

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】The urgent situation required that we ________ an immediate decision.

A.should makeB.madeC.have madeD.had been made

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】Although she is only 16 years old, she ______ to drugs for two years.

A. addicts B. had been addicted

C. has addicted D. has been addicted

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】Yesterday my father bought me a book. The book is worth ____________.

A. read B. to read

C. reading D. to be read

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】It is not rare in_____ that people in ______ fifties are going to university for further education.

A.90s ; theB.the 90s; /C.90s; theirD.the 90s ; their

查看答案和解析>>

同步練習(xí)冊答案