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【多选题】
Ema 刚刚认识了 Paco , Ema 可以对他说
A.
Encantado
B.
Mucho gusto
C.
Encantada
D.
Mucho gusto en conocerte
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参考答案:
举一反三
【简答题】烷基化反应中常用的烷化剂和烷基化方法有哪些?
【多选题】What do you say when you have a bad connection on a call? ( )
A.
I can’t hear you very much.
B.
I am losing you.
C.
You are breaking up.
D.
I've got really weak signal.
【简答题】People in different countries have different ways of doing things. Something that is 1 in one country may be quite impolite in another. In Britain , you mustn't lift your bowl to your 2 when you are h...
【简答题】Perhaps those who have been rendered unhappy by a bad theory may need a better theory to help them to recovery,just as you may need a tonic when you have been ill.
【多选题】常用的烷化剂()
A.
烯烃
B.
卤烷
C.
D.
羧酸
【单选题】如图,Rt△ABC中,∠ABC=90°,AB=6, BC=8,以斜边AC作正方形ACDE,则边BE的长是 [     ]
A.
15
B.
C.
【单选题】化学诱变中常用的烷化剂有:
A.
2- 氨基嘌呤
B.
硫酸二乙酯
C.
叠氮化钠
D.
放线菌素
【单选题】Which medicine should you not take when you have a bad cold? ( )
A.
hypertensive medicine
B.
aspirin
C.
Anti-inflammatory drugs
D.
antipyretics
【判断题】When you have a bad cold, you'd better do a lot of sports and eat junk food.
A.
正确
B.
错误
【单选题】化学诱变中常用的烷化剂有:
A.
硫酸二乙酯
B.
.2- 氨基嘌呤
C.
.放线菌素
D.
.叠氮化钠
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