1、题目42:() the dinner was all over,everyone helped wash the dishes.
A. How
B. When
C. Before
D. Why
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1、题目90:What () good news!Our school band(乐队)will play at Harbin Summer Concert in
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1、题目25:--Mum,where is Dad? --He () flowers in the garden now.
A. planted
B. plants
C. will plant
D. is planting
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1、题目42:lg2+lg5=( )
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1、题目34:设函数f( )=2x-5,f(x+1)=( )
A. 4x-5
B. 2x-8
C. 2x-3
D. 2x-4
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1、题目41:在等比数列{an}中,已知a3·a4=4,则a1·a2·a5·a6=( )
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1、题目58:设集合A={x|0≤x≤10},B={y|0≤y≤4},则下列从A到B的对应法则f不是映射的是( )
A. f:x→y=(1/2)x
B. f:x→y=(1/3)x
C. f:x→y=(1/4)x
D. f:x→y=(1/6)x
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1、题目40:若等差数列{an}的前3项和为9,且a1=1,则a2=( )
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1、题目35:下列函数在(-∞,0)上为增函数的是( )
A. y=-x+3
B. y=-2x
C. y=-2x+1
D. y=5x+3
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1、题目37:
( )
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