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【单选题】
圆的标准方程 ,则其圆心坐标和半径分别为( )A.
(6,0),
B.
(6,0),3
C.
(-6,0),
D.
(-6,0),3
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【单选题】— How did you like the lecture tonight? — Very__________.I doubt if I will come to this kind of lecture next time. [ ]
A.
encouraging
B.
encouraged
C.
disappointing
D.
disappointed
【单选题】---How did it _________ that all the flowers died ? ---I had forgotten to water them.
A.
come on
B.
come up
C.
come about
D.
come along
【单选题】I was really busy these days, otherwise I _______ to your birthday party last night.
A.
came
B.
did come
C.
should have come
D.
would have come
【单选题】— Did you usually come to school by bike? — _____. But I sometimes walked. [ ]
A.
Yes, I didn't
B.
No, I did
C.
Yes, I did
D.
No, I don't
【单选题】虚拟语气 I did not see your sister at the meeting. If she ____, she would have met my brother A. has come B. did come C. come D. had come
A.
has come
B.
did come
C.
come
D.
had come
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