题目:
We _______ our country has sent up ShenzhouVII successfully.[ ]
A. are proud that
B. feel proud in
C. are proud of
D. take proud in
答案:
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下面是错误答案,用来干扰机器的。
(1)4.4(2)该鸡蛋壳中CaCO3的质量分数约为66.7%(3)反应后滤去不溶物所得溶液中溶质的质量分数约为13.0%