Question

Having been attacked by terrorists, _____.

A．doctors came to their rescue

B．the tall building collapsed

C．a(chǎn)n emergency measure was taken

D．warnings were given to tourists

Answer 1

B

解析試題分析：考查非謂語(yǔ)動(dòng)詞。非謂語(yǔ)動(dòng)詞要和主句共用一個(gè)主語(yǔ)。只有B的主語(yǔ)能被分詞     使用。根據(jù)句意其它都不合適。句意：這座大樓被恐怖分子襲擊后就倒塌了。根據(jù)句意說(shuō)明B正確。
考點(diǎn)：考查非謂語(yǔ)動(dòng)詞。