A、 your;their
B、 your;them
C、 yours;theirs
D、 you;them
答案:B
A、 your;their
B、 your;them
C、 yours;theirs
D、 you;them
答案:B
A. information
B. experience
C. practice
D. success
A. 0
B. 1
C. -1
D. 不存在
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. 0
B. 1
C. 2
D. 3
A. a
B. an
C. the
D. /
A. that you did and saw there
B. when you come back
C. how did you get there
D. if you saw models of spacecraft there
A. in
B. to
C. with
D. at
A. 奇函数非偶函数
B. 偶函数非奇函数
C. 奇函数且偶函数
D. 非奇非偶函数
A. π
B. 2π
C. π/2
D. π/4
A. can
B. must
C. may
D. need