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问题
单项选择题
将鸡蛋放入比重为（）食盐水中，下沉的蛋为最新鲜蛋。
A、1.040
B、1.060
C、l.073
D、1.080
答案
参考答案：
D
选择题
Each _____ water is very important for us.
A. drop of
B. kind of
C. lots of
D. lot of
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选择题
— Are you going somewhere during the winter vacation?
— Yes, I've found a nice beach _____ I can enjoy swimming even in February.
A. that
B. when
C. where
D. which
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