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【单选题】
若某反应的活化能为80 kJ·mol-1，则反应温度由20℃增加到30℃，其反应速率系(常)数约为原来的：（ ）。A.
2倍；
B.
3倍；
C.
4倍；
D.
5倍。
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皮皮学刷刷变学霸
举一反三
【单选题】If you want to express disagreement, which of the following is the politest?
A.
You must be joking.
B.
I disagree with you entirely.
C.
I’m afraid I have a different opinion.
D.
I really can’t agree.
【简答题】写出下列单词和词组:1.空缺,空位(名词) 2.登记(动词) 3.预定(动词) 4.鼓励(动词) 5.接待员(名词) 6.娱乐,消遣(名词) 7.提前,事先(词组) 8.风景,景色(名词) 9.话务员,操作员(名词) 10.十二月(名词)
【多选题】When you want to express your intentions, you may say ________
A.
I meant to do it yesterday
B.
I have no intention of doing it
C.
I expect to go shopping with you tomorrow
【单选题】为预防风疹和先天性风疹综合征，禁忌接种风疹减毒活疫苗的人群是
A.
育龄期女青年
B.
结婚登记时的女青年
C.
注射过抗风疹人血清免疫球蛋白孕妇
D.
妊娠妇女（孕妇）
E.
1岁以上的少年儿童
【多选题】If you want to express your agreement, what should you say? ( )
A.
I think so too.
B.
I don't think so either.
C.
That's a good point。
D.
I couldn't agree more.
【简答题】预先登记:
【单选题】When you want to express possibility, you may say_____
A.
It’s likely that we will go together
B.
I doubt (if) that would/could/will happen
C.
The chances are pretty slim.
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