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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1211

The electronic red-packet has been so ______ that AliPay and Tencent Wechat compete against each other openly and secretly since the beginning of this year.

A.popular B.convenient
C.favorable D.arbitrary
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Theelectronicredpackethasbeens