Question

The reason__________ their failure you know is__________ they didn't get fully prepared for the experiment．

A．why, that

B．that, why

C．for, that

D．why, because

Answer 1

C

試題分析:重點(diǎn)在句子成分分析，is 為主句謂語(yǔ)。You know 為定從  that 引導(dǎo)表語(yǔ)從句。
for 表“對(duì)于”。句意：對(duì)于你知道的他們失敗的原因是他們沒(méi)有為實(shí)驗(yàn)做充足的準(zhǔn)備。故選C
點(diǎn)評(píng)：本題較難，乍一看不知如何下手，所以認(rèn)真分清句子成分是解題的關(guān)鍵�？衫�用排除法解題。