可引起可逆性的前庭反应的是()
A.四环素
B.链霉素
C.氯霉素
D.多西环素
E.米诺环素
参考答案:E
It is__________ his advice on how ___________English well_________ you a lot of trouble. [ ]
A. because; to learn; that will avoid
B. taking; to learn; that will save
C. because of; learning; which will waste
D. for;learning;that will make
三视图是指正视图、侧视图和()。
A、仰视图
B、俯视图
C、背视图
D、左视图