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题目内容
（国家开放大学理工英语1）
4. “A nation on wheels” in the second paragraph means that 回答
.
A．everyone in the United States owns a car
B．the United States produces most of the cars in the world
C．cars play an important part in American’life
.
A．everyone in the United States owns a car
B．the United States produces most of the cars in the world
C．cars play an important part in American’life
参考答案