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【单选题】
It is fast, cheap, and almost always on time, but it is often crowded.A.
适时
B.
及时
C.
准时
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皮皮学刷刷变学霸
举一反三
【单选题】What can we see there?
A.
We can see many beautiful butterflies.
B.
We can see many beautiful birds.
【简答题】齿轮传动要匀速、连续、平稳地进行，必须满足哪些条件?
【单选题】How can we specify the meaning of ‘John ran after the man with a gun’?
A.
See if there is a picture.
B.
Ask the speaker to clarify. (e.g. Wait a minute! Who has a gun, John or the man?)
C.
All of the above.
D.
See if there are hints before or after the sentence.
【单选题】------- Now you can see how serious the situation is ! -------- Yes. We _____something before it got so bad .
A.
should do
B.
must do
C.
must have done
D.
ought to have done
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