1、题目12:己知集合A={x|x是有理数},则下列选项错误的是( )
A. 0∈A
B. 3/4∈A
C. {0}包含于A
D. -π∈A
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1、题目100:--Do you know that China is one of () countries in the world? --Yes,I do.It＇s much ()
than the US.
A. oldest;older
B. the oldest;older
C. the oldest;elder
D. the older;elder
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1、题目3:{an}是等差数列,若a2=3,a7=13,则此数列前8项和为( )
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1、题目60:已知集合A={( )|x+2y=6}, B={( )|x-y=3},那么A∩B为( )
A. x=4,y=1
B. {(4,1)}
C. {4,1}
D. (4,1)
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1、题目25:已知等比数列{an}中,a1=2,公比q=3,则此数列前3项和为( )
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1、题目117:--Will Karen come to our party? --She hasn＇t decided yet.She () come.
A. need
B. must
C. may
D. has to
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1、题目77:-- () will the invitations be sent to our guests? --In three days.
A. How often
B. How soon
C. How long
D. How far
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1、题目73:Mr.Smith told his son () the football match because of the exam.
A. not to watch
B. to not watch
C. not watching
D. doesn＇t watch
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1、题目37:Doing eye exercises () one of the useful ways to protect our eyes.
A. is
B. are
C. were
D. /
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1、题目67:--Cathy,can you answer the door?I () the room. --I’m coming,Mum.
A. clean
B. cleaned
C. have cleaned
D. am cleaning
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