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问题
单项选择题
辛热燥烈,易耗气动火,不宜多用、久服的药物是
A.牵牛子
B.川楝子
C.吴茱萸
D.木通
答案
参考答案:
C
选择题
—What's on the teacher's desk?
—________ a book and some flowers on it.
A. There is
B. There are
C. Have
D. Has
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名词解释
史前社会
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