Question

_____ the city’s public school system should be open to the children of migrant workers has become the focus of discussion.

A．Whether

B．What

C．That

D．If

Answer 1

A

試題分析：考查主語從句。句意：城市的公立學(xué)校系統(tǒng)是否應(yīng)該對(duì)外來務(wù)工人員的小孩開放已經(jīng)成為討論 的焦點(diǎn)。根據(jù)句子結(jié)構(gòu)及句意，主語從句中主干完整，故排除答案Ｂ，連接詞that沒有實(shí)際含義，故排除， 而if引導(dǎo)主語從句時(shí)不能位于句首，故選A