钢材在空气中自然冷却的方法叫（）。
A.快冷
B.缓冷
C.空冷
参考答案：C
— I just can't stop worrying about the result of the job interview.
— _____. There's nothing you can do now but wait. [ ]
A. Relax
B. Go ahead
C. Go for it
D. Good luck
