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元素属性:按照课本157的例7-3,掌握利用DOM操作div元素属性的方法

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元素样式:按照课本159页例7-4的步骤,掌握DIV元素classList的属性和方法的应用

The United States has a trade _____ not only with China, but also with many other countries.

A.transit
B. surplus
C. deficit
D. transaction

Domestic and international trade can _____ each other.

A.complete
B. complement
C. accomplish
D. achieve

The company saw the sharpest rise in average ____ per user.

A. revenue
B. income
C. salary
D. investment

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