认为治痰须补气兼消痰,并补命火的医学著作为
A.《石室秘录》B.《内经》C.《难经》D.《景岳全书》E.《医学法律》
参考答案:A
_____ the boys often _____ in the swimming pool? [ ]
A. Do, swims
B. Does, swims
C. Do, swim
D. Are, swimming
雌、孕激素在生理作用上有哪些协同作用?