问题补充:
单选题ThereareseveralresearchcentersinChina________acertaindiseasecalledBirdFluisbeingstudied.A.whichB.whereC.whenD.what
答案:
B解析因为先行词是research centers并在定语从句中作状语,所以用where。
时间:2020-12-08 16:21:41
单选题ThereareseveralresearchcentersinChina________acertaindiseasecalledBirdFluisbeingstudied.A.whichB.whereC.whenD.what
B解析因为先行词是research centers并在定语从句中作状语,所以用where。