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问题
选择题
Tom, _________ forget to do your homework.
A. can't
B. don't
C. doesn't
D. aren't
答案
答案:
B
填空题
已知点A(a,6)到直线3x-4y=0的距离为4,则a=______.
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问答题 简答题
请阐述如何护理异常脉搏的患者?
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