【单选题】--- Do you know _____ Mr. Black’s address is. --- He may live at No. 18 or No. 19 of Bridge Street. I'm not sure of _____.
【简答题】.---Where’s that report? ---I brought it to you ________ you were in Mr. Black’s office yesterday. A.if B.when C.because D.before
【单选题】—Where is that report? —I brought it to you _______ you were in Mr. Black’s office yesterday.
【简答题】免疫的正确概念是A. 机体对病原微生物的防御能力 B.机体抗感染的过程 B. 机体识别和清除抗原性异物的功能 C. 机体清除自身衰老、死亡的组织细胞的功能 D. 机体清除杀灭自体突变细胞的功能
【单选题】—Where’s that report? —I brought it to you ____you were in Mr. Black’s office yesterday.