下面代号中（）表示热轧带肋钢筋。
A.HRB
B.HPB
C.RRB
D.LRB
参考答案：A
_____, Mary would not have hurt herself. [ ]
A. If she listened to me
B. As soon as she listened to me
C. If she has listened to me
D. Had she listened to me
跳水求生时高度一般不要超过（）。
A、8米
B、6米
C、5米
