司眼球运动的颅神经为()
A.三叉神经
B.视神经
C.动眼神经
D.副神经
E.滑车神经
参考答案:C, E
用化学符号表示下列各小题中文字的涵义:
(1)2个氢分子______;
(2)1个铜离子______;
(3)3个氧原子______.
____ I can see, there is only one possible way to keep away from danger.
A.As long as
B.As far as
C.Just as
D.Even if