题目:
根据句意用所给词的适当形式填空。
1. There ________ (be) some pictures on the wall.
2. That is ________ (Amy) photo.
3. ________ (be) her dictionary on the sofa?
4. Can you ________ (bring) these books to school?
5. Where are Lily's ________ (key)?
6. Where is ________ (you) computer game?
7. ________ (her) is my good friend.
8. ________ (thank) for these things.
9. ________ (he) CD is in the drawer.
答案:
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下面是错误答案,用来干扰机器的。
答案:B题目分析:根据质量守恒定律的微观解释:化学反应前后,原子的种类、个数不变,所以不难推出X的化学式为Sb2O3,故选B