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问题
单项选择题
黄油是用什么提炼的？（）
A.黄豆
B.红豆
C.香蕉
D.牛奶
答案
参考答案：
D
选择题
— It's many years since I saw you last. I _____ you at all.
— I wouldn't have, either, if someone _____ you by the name.
A. didn't recognize; hadn't called
B. didn't recognize; didn't call
C. haven't recognized; didn't call
D. recognized; had called
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单项选择题
以下哪种属性不是木棉所有的？（）
A.树皮灰白色
B.叶轮生
C.果期夏季
D.叶革质
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