在签订对外经济贸易合同时控制汇率风险的首要步骤是（）。
A.选择有利的合同货币
B.加列合同条款
C.进行即期外汇交易
D.提前或延期结汇
参考答案：A
你最喜欢课中《识字7》的哪个对子，请把它写下来。
1．
2．
There is ______in the car, and you can put another box in it. [ ]
A. many rooms
B. many room
C. much room
D. much rooms
