问题
选择题
—______ this?
—______ a computer. [ ]
A. What's, This
B. What's, It's
C. What, It
D. What, This is
答案
答案：B
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—______ this?
—______ a computer. [ ]
A. What's, This
B. What's, It's
C. What, It
D. What, This is
答案：B