【題目】Many students are at a loss as to _________ they spend so much time on language learning, but achieve little.
A. that B. why C. how D. which
【答案】
【解析】
試題分析:考查名詞性從句。句意:很多學(xué)生感到困惑的是為什么他們?cè)谡Z(yǔ)言學(xué)習(xí)上花費(fèi)了如此多的時(shí)間但收效甚微。分析句子結(jié)構(gòu)可知,空處在此引導(dǎo)從句作as to 的賓語(yǔ),且引導(dǎo)詞在從句中充當(dāng)原因狀語(yǔ),故用why。故選B項(xiàng)。
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