【題目】It remains a puzzle for scientists ______ pleasant smells do not reduce pain in men.

A. whatB. why

C. howD. whether

【答案】B

【解析】

考查同位語從句的引導詞。句意：為什么令人愉悅的氣味不能減輕男性的痛苦，這仍然是科學家們的困惑。本句為同位語從句修飾puzzle，且從句中缺少原因狀語，故選B。

練習冊系列答案
相關習題

科目：高中英語 來源： 題型：

【題目】The civil war broke out in Libya, ______ to the instability of the international oil price．

A. to contributeB. contributed

C. having contributedD. contributing

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】 What he didn’t mean ____ you. He meant ____ you.

A. hurting; helping

B. to hurt; helping

C. to hurt; to help

D. hurting; to help

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】He worked as a librarian before ________ to journalism .

A. switchingB. swearingC. swellingD. swinging

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】Mother always complains that children _______ their shoes very quickly.

A.find outB.wash outC.wear outD.set out

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】Our capital, Beijing, ______ on improving the city’s environment in the past three years through various measures.

A. has been workingB. were working

C. workedD. had worked

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】– I wonder if you could go with me to the cinema.

--- Don’t disturb me. I ______ a composition all the morning and haven’t finished it yet.

A. write B. was writing

C. have written D. have been writing

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】Miss Smith is a friend of______ .

A. Mary’s mother’s

B. Mary’s mother

C. Mary mother’s

D. mother’s of Mary

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】The moment their idol took the floor, the excited fans ________ thunderous applause.

A. ran into B. burst into

C. came into D. turned into

查看答案和解析>>

同步練習冊答案