弃船时应拒绝旅客寻找亲属，但范围极小（）寻找。
A、可以
B、不可
C、制止
参考答案：A
You may find it _______ that Charlie was taught to sing as soon as he could speak.
A．astonishing
B．astonished
C．to be astonished
D．to be astonishing
国产机油、齿轮油、润滑脂分别按（）分类。
A.凝点
B.粘度
C.针入度
D.滴点
