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【简答题】
在化学反应中，物质所含元素化合价变化的反应是氧化还原反应．根据元素化合价变化情况可判断反应中的氧化剂和还原剂．例如：反应Zn+CuCl 2 ═Cu+ZnCl 2 是氧化还原反应，其中Zn是还原剂，CuCl 2 是氧化剂，则在反应：Cl 2 +2NaBr═Br 2 +2NaCl中，氧化剂是______，还原剂是______．
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【单选题】听力原文：M: Susan, have you read the notice on the bulletin board? I've won the scholarship for the next semester. W: I knew you would. You certainly deserve it. Q: what does the woman mean? (19)
A.
She is surprised at the news.
B.
She has also won a scholarship.
C.
She has confidence in him.
D.
She is not interested in the news.
【单选题】听力原文：M: Susan, have you read the notice on the bulletin board? I've won the scholarship for the next semester. W: I knew you would. You certainly deserve it. Q: What does the woman mean? (17)
A.
She has confidence in him.
B.
She is surprised at the news.
C.
She has also won a scholarship.
D.
She isn't interested in the news.
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