CC的促排卵作用是( )
A.促垂体分泌LH及FSH
B.促卵巢分泌E2(下标)
C.有弱雌激素作用
D.在下丘脑与雌激素争夺受体
E.以上都不是
参考答案:D
As a young man, he ________ many social activities and later _______ the Party.
A.took part in; joined
B.took part in ; joined in
C.joined in; took part in
D.joined; took part
将初温相同,质量相同的水和石头吸收相同热量后相互接触,则热量将从______传给______.