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问题
单项选择题
石斛药材来源于（）
A.兰科
B.百合科
C.菊科
D.唇形科
E.天南星科
答案
参考答案：
A
选择题
The computers made by our company sell best, but several years ago no one could have imagined the role in the markets that they _____.
A. were playing
B. were to play
C. have played
D. played
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问答题 简答题
广东省国家税务局通用机打发票无限额版怎样使用？
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