合力进行平津战役的解放军是
①东北解放军 ②中原解放军 ③华东解放军 ④华北解放军 [ ]
A.①②
B.②③
C.①③
D.①④
答案:D
—How many babies can a mother giant panda have _____?
— One or two.[ ]
A. one time
B. at a time
C. at times
D. some time
性能功效相类似的药物配合应用,可增强原有疗效的配伍关系是( )
A.相杀B.相须C.相使D.相恶E.相畏