题干
Which do you prefer to use to keep in touch with your friends, QQ______ WeChat？
A：or
B：and
C：so
D：but
答案(点此获取答案解析）
A
Which do you prefer to use to keep in touch with your friends, QQ______ WeChat？
A：or
B：and
C：so
D：but
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的图象上所有的点（ ）
