A:X和Y不可能位于同一周期
B:X不可能是非金属
C:X和Y一定位于不同主族
D:化合物XY3溶于水可能显碱
看图片,选句子
A. Whose storybooks are these?
B. John is jumping.
C. Who is singing?
D. Look !Zoom is eating watermelon.
E. It is drinking water.
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