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【单选题】
根据碰撞理论,温度升高导致反应速率明显增加的主要原因是A.
分子碰撞机会增加
B.
反应物压力增加
C.
活化分子数增加
D.
活化能降低
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【单选题】听力原文：M: That suitcase looks very heavy, Mrs White. Would you like me to carry it for you? W: No, it's quite all right. I can manage. Thank you for offering, though. Q: How does Mrs Smith respond? (13)
A.
She says she doesn't mind if the man carries the case.
B.
She is angry when the man offers to carry the case.
C.
She refuses the help.
D.
She thanks the man and accepts his offer.
【单选题】听力原文：M: That suitcase looks very heavy, Mrs White. Would you like mc to carry it for you? W: No, it's quite all right. I can manage. Thank you for offering, though. Q: How does Mrs White respond? (13)
A.
She says she doesn't mind if the man carries the case.
B.
She is angry when the man offers to carry the case.
C.
She refuses the help.
D.
She thanks the man and accepts his offer.
【简答题】Read and complete. Lydia: Hi. Kevin. What do you do after school every day? Kevin: Hi. Lydia. Umm, I have lots of things to do. On Monday and Friday I go to the library with my dad. Lydia: What do yo...
【单选题】The following information is available for a stock: The dividend for Y1 will be $5, and that for Y2 will be $8, and that for Y3 is $12. Also at the end of Y3, the share can be sold for $50. If your re...
A.
$57.74
B.
$37.23
C.
$45.65
D.
$72.34
【判断题】Suppose that the demand curve for an industry's output is a downward sloping straight line and there is constant marginal cost. Then the larger the number of identical firms producing in Cournot equil...
A.
正确
B.
错误
【简答题】3 Kevin: I have short black hair, brown eyes and a(n) ________ (athletic / muscular) build.
【单选题】Kevin: I have short black hair, brown eyes and a(n)_____build
A.
athletic
B.
muscular
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