1、题目89:--Look!Who is () beautiful girl in red? --Oh,she is my deskmate.

A. 　exercises

B. 　problems

C. 　skills

D. 　rules

A. 　relationship

B. 　agreement

C. 　environment

D. 　investment

A. 　information

B. 　experience

C. 　practice

D. 　success

A. 　x=4,y=1

B. 　{(4,1)}

C. 　{4,1}

D. 　(4,1)

A. 　quite

B. 　too

C. 　very

D. 　so

A. 　a

B. 　an

C. 　the

D. 　/

A. 　a

B. 　an

C. 　the

D. 　/

A. 　not to be late

B. 　not being late

C. 　to be late

D. 　being late

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. 　twenty-five

B. 　the twenty-five

C. 　twenty-fifth

D. 　the twenty-fifth