ThereareseveralresearchcentersinChina
問題詳情:
There are several research centers in China ________ a certain disease called Bird Flu is being studied.
A. which B. where C. when D. what
【回答】
B. 因爲先行詞是research centers並在定語從句中作狀語,所以用where。
知識點:定語從句
題型:選擇題