Question

【題目】（題文）(2015·陜西) ____________ the delayed flight will take off depends much on the weather.

A. Why B. When

C. That D. What

Answer 1

【答案】B

【解析】試題考查名詞性從句的連接詞。句意：被延誤的航班何時(shí)起飛依天氣而定。題干中主句的謂語動(dòng)詞為depends，為此前面是主語從句。Why在主語從句中做原因狀語；when在主語從句中作時(shí)間狀語；that在主語從句中不做任何成分；what在主語從句中作主語或賓語。根據(jù)語境判斷主語從句中缺少時(shí)間狀語，故選B項(xiàng)。