如算出的水面蒸发量为负值,则一律记为;()。
A、0.0
B、0.0+
C、0.0-
D、0
参考答案:B
—What do you think of the match?
—It was ____ exciting that we were all excited about it.[ ]
A. so
B. very
C. too
D. quite
苯二氮卓类的中枢作用机制()
A.增加Cl通道开放频率,使神经细胞超极化
B.增加γ-氨基丁酸(GABA.能神经的突触抑制效应
C.激活苯二氮受体
D.促进GABA与GABA受体结合
E.延长Cl通道开放时间