Current estimates suggest a______of one cellular phone to every three people, and the figure is rapidly rising.

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问题 Current estimates suggest a______of one cellular phone to every three people, and the figure is rapidly rising.

选项 A、range
B、ratio
C、level
D、rate

答案B

解析词汇：名词1．这是一道词汇选择题，选项均为名词。2．三个人中就有一人使用手机说明使用比例(高)，名词ratio意为“比例”，和介词to连用。3．range表示“范围”，rate表示“速度”。

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