题目内容
【题目】
A.40.B.39.C.52.D.27.
【答案】B
【解析】
【原文】
W: Is your computer class still crowded?
M: Well. On the first day there were 40 students altogether, and the next day 12 more students came. But the third day 13 students left.
Q: How many students are there in the computer class at the moment?（B）
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