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【单选题】
下列对原电池的描述哪个是不正确的?A.
在阳极上发生氧化反应
B.
电池内部由离子输送电荷
C.
在电池外线路上电子从阴极流向阳极
D.
当电动势为正值时电池反应是自发的
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【简答题】阅读下列短文，然后在每小题的A、B、C、D四个选项中选出最佳选项。 Welcome to Franklin Hotel. We will make your stay here as enjoyable as possible. We hope we will give you the best service. ．Room Service: You can use the service 24 ...
【单选题】Meals also have to be _____from their original state so that they will have a beneficial effect on the body.
A.
transformed
B.
modified
C.
passed
D.
corrected
【单选题】听力原文：M: Well, we have nothing in the refrigerator. We need some eggs, milk, and bread. W: Let me see. We also need to get some fresh vegetables. Oh, some beef, too. Anything else do we need? Q: What a...
A.
Go shopping.
B.
Cook meals.
C.
Eat out.
D.
Buy a refrigerator.
【多选题】Why do you need to take into consideration the people making up the group and the group size?
A.
This is because different groups have different needs.
B.
This is because different groups have different expectations.
C.
This is because different groups have different interests.
D.
Consider also the group size for the purposes of transportation, accommodation and meals.
【单选题】Whether at home or in a restaurant, meals in Brazil are sacred (神圣的) : a time to eat, but also to share precious moments with family and friends. Now, here's a Brazilian custom I miss enormously: a de...
A.
in a hurry at restaurants
B.
in a leisurely manner
C.
at their desk in the office
D.
for less than 1/2 hour
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