【題目】He sometimes asked himself the question ______ his research was worth devoting his life to.

A．that B．if C．whether D．how

【答案】C

【解析】句意：他有時(shí)候問自己這個(gè)問題——他的研究是否值得將他的畢生都投入進(jìn)去。根據(jù)句意，可見是表示懷疑，所以要選表“是否”的詞；而空缺處引導(dǎo)同位語(yǔ)從句，______ his research was worth devoting his life to作the question的同位語(yǔ)，if不能引導(dǎo)同位語(yǔ)從句，故選C項(xiàng)。

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來源： 題型：

【題目】As we grow up, we get better at knowing ______ we are feeling and why.

A．what B．how C．that D．whether

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】______ you should stop smoking is the biggest decision you have to make.

A．If B．Unless C．What D．Whether

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】The question ______ you should take this medicine should be decided by your family doctor.

A．why B．whether C．if D．that

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】Never waste food!You know,children in some African countries die of_________（饑餓）every day.

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】There are seven_________（大洲）and four oceans in the world.

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】__________ _________ there for 30 years, Haydn moved to London, _________ he was very successful.

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】Wilson ___________considerable success as an artist during the past few years.

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】He slowed the bleeding by (運(yùn)用) pressure to the wounds until help arrived.

查看答案和解析>>

同步練習(xí)冊(cè)答案