A级分隔分为（）。
A.A-30
B.A-45
C.A-90
参考答案：A
中央电视台l9：30播放的新闻联播结束，这时就是______上______时______分．
She tried to stay calm on the stage, but her trembling voice _______ her nervousness.
A．gave away
B．gave up;
C．gave off
D．gave out
