在订货合同中不明确价格,而是在产品制成以后或者交货时才进行定价的方法是对付()的一种价格策略。
A.通货膨胀
B.经济紧缩
C.经济疲软
D.经济制裁
参考答案:A
We tried_______the people in Wenchuan when the earthquake happened. [ ]
A. help
B. helping
C. to help
D. to be helped
I have _______ food at home.
A.lot of
B.lots of
C.a lot
D.a lots of