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【单选题】
热型火花塞适用于() 、转速低的发动机。A.
压缩比小、功率小
B.
压缩比小、功率大
C.
压缩比大、功率大
D.
压缩比大、功率小
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反馈参考答案：
举一反三
【单选题】She ______ in New Zealand for years till now since she was very young.
A.
lives
B.
has been living
C.
has lived
【单选题】My friend hasn’t _____ till now——I hope she isn’t ill.
A.
come up
B.
made up
C.
gone up
D.
turned up
【单选题】Myra showed no sign of emotion till she reached home, ______ she broke down completely.
A.
as
B.
after
C.
when
D.
because
【单选题】She ________ in his English till now , but Wei Hua still works hard in order to be____ at it.
A.
has made a progress; better
B.
is making progress; more better
C.
is making a progress; better
D.
has made progress; better
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