But ()number of the users is expected to rise to 44.6 million by 2022.

科目名称：理工英语3

试卷号：11377

题型：词汇与结构(单选题)

题目：But ()number of the users is expected to rise to 44.6 million by 2022.

选项：A.the B./ C.a

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答案：A.the