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【单选题】
圆柱齿轮的结构分为齿圈和轮体两部分，在( )上切出齿形。A.
齿圈
B.
轮体
C.
齿轮
D.
轮廓
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【简答题】tour leader
【单选题】Everyone in our class was working hard and doing what we could _______ a good college.
A.
enter。m
B.
to enter
C.
entering。m
D.
entered
【单选题】— What are we going to do after work? — I'm thinking that we could _____ a movie. [ ]
A.
take down
B.
take out
C.
take in
D.
take on
【判断题】We could enter the manufacturing area of a pharmaceutical company freely.
A.
正确
B.
错误
【单选题】Everyone in our class was working hard and doing what we could ______ a good college. [ ]
A.
enter
B.
to enter
C.
entering
D.
entered
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