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【单选题】
极限 (k为整数),则k=( )A.
1
B.
2
C.
-2
D.
3
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【简答题】Can animals do work for us? Some scientists think that animals may do a lot of jobs. They say that we may see many elephants, monkeys, dogs, bears, and other animals do a lot of things. Animals can ge...
【简答题】Can animals do work for us? Some scientists think that animals may do a lot of jobs. They say that we may see many elephants, monkeys, dogs, bears and other animals do a lot of things. Animals can get...
【单选题】We laugh at jokes, but seldom __________ about how they work.
A.
we think
B.
think we
C.
we do think
D.
do we think
【单选题】听力原文：W: Is there anything interesting we can do this evening? M: Shall we go to the cinema? Q: What are they going to do? (24)
A.
Playing games.
B.
Watch TV.
C.
See a film.
【单选题】We can't work out the physics problem. Can you tell us _____? [ ]
A.
how to do
B.
what to do it
C.
how to do it
D.
what should to do
【单选题】—________ we finish the work before class, Jack? —No, we_________ . We can do it after class.
A.
Must, don’t have to
B.
Must, must
C.
Can, mustn’t
D.
Can, needn’t
【单选题】Faced with the exams, we should work as hard as we can. , we shouldn’t do it at the cost of our health.
A.
Therefore
B.
However
C.
Moreover
D.
Furthermore
【简答题】Can we make animals work for us? Some scientists think that we can teach animals to do a lot of things for the people. They say that in a farm or on TV, you may see elephants, monkeys, dogs or some ot...
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