A、3
B、4
C、5
D、6
答案:B
A. 4
B. 3
C. 2
D. 1
A. putting off
B. putting on
C. putting down
D. putting away
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
A. was
B. were
C. is
D. are
A. Anything
B. Something
C. Nothing
D. Other things
A. so
B. very
C. too
D. much
A. big
B. old
C. small
D. cheap
A. make
B. made
C. makes
D. making
A. hopefully
B. suddenly
C. usually
D. luckily
A. {x|-2<x<2}
B. {x|x>2或x<-2}
C. {x|-2≤x<2}
D. {x|x≥2或x<-2}