Question

A housing bubble is an economic situation _____ occurs when house prices rise much too fast.

A．which

B．where

C．what

D．why

Answer 1

A

試題分析:考查定語從句。從結(jié)構(gòu)判斷situation為先行詞，后面跟定語從句，從句中缺少主語，所以用關(guān)系代詞which。B，D選項(xiàng)是關(guān)系副詞，在從句中不做主語，C選項(xiàng)what不引導(dǎo)定語從句。句意：房地產(chǎn)泡沫是一種經(jīng)濟(jì)形勢(shì)，這種經(jīng)濟(jì)形勢(shì)只有當(dāng)房價(jià)上升太快的時(shí)候才會(huì)發(fā)生。所以A選項(xiàng)正確。