A、 π
B、 2π
C、 3π
D、 4π
答案:A
A. will kill
B. have killed
C. kill
D. killed
A. twenty-five
B. the twenty-five
C. twenty-fifth
D. the twenty-fifth
A. {x|-1<x<3}
B. {x|x>3或x<-1}
C. {x|-3<x<1}
D. {x|x>1或x<-3}
A. need
B. must
C. may
D. has to
A. well
B. better
C. best
D. great
A. 8
B. 4
C. 2
D. 1
A. π/4
B. π/2
C. π
D. 2π
A. to
B. including
C. about
D. over
E.
F.
G.
H.
I.
J.
解析:
A. told
B. is told
C. will tell
D. was going to tell
A. 0
B. 1
C. -1
D. 不存在