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问题
单项选择题
椎弓和椎体围成()
A.椎间孔
B.椎孔
C.横突孔
D.肋凹
E.椎管
答案
参考答案:B
选择题
Don't waste time (浪费时间)! It's never ______late______ review (复习) what you learned last
month.
A. too, too
B. so, that
C. too, to
D. very, to
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名词解释
进户线
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