BarackObamadeliveredaspeechto500localyouthsduringhisvis...

問題詳情：

Barack Obama delivered a speech to 500 local youths during his visit to China，many of      were from Fudan University and Tongji University．

A．them           B．whom      C．which          D．those

【回答】

B

知識點：定語從句

題型：選擇題