1、题目18:集合{a,b,c}的真子集有( )
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1、题目43:设a>b,c>0,则下列各式中正确的是( )
A. ac>bc
B. ac<bc
C. a-b>a-c
D. a+b>a+c
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1、题目17:不等式8-x2<-1的解集是( )
A. {x|-3<x<3}
B. {x|x>3或x<-3}
C. {x|-3≤x<3}
D. {x|x≥3或x<-3}
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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11:设函数f( )=2x-5,g(x+1)=f( ),则g( )的表达式为( )
A. 2x+1
B. 2x-3
C. 2x-5
D. 2x-7
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1、题目16:cosπ=( )
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1、题目84:--Look at this model ship.I made it all by () last week. --Wow,you are so smart!
A. me
B. my
C. mine
D. myself
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1、题目65:Jane is very busy these days,for she has a lot of problems to ().
A. deal with
B. keep up with
C. agree with
D. come up with
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1、题目123:In order () for the meeting,my sister forced herself to get up early this morning
A. not to be late
B. not being late
C. to be late
D. being late
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1、题目30:下列命题:①空集没有子集;②任何集合至少有两个子集;③空集是任何集合的子集;④若∅真包含于集合A,则A≠∅.其中正确的有( )
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