期货合约的交割月份由期货交易所规定，期货交易者可自由选择交易不同交割月份的期货合约。（）
参考答案：对
雨层云国际简写为（），卷云国际简写为（）。
-Why are you so late,Tom?
-I was on half the way when it_________to me that I had left my notebook at home,so I had to
fetch it. [ ]
A. occurred
B. hit
C. happened
D. reminded
