23． The American friends have given us a lot of books，few of ＿＿＿＿＿ a bit　difficult for us Chinese students．

　　　A． them are　　 　　 B． those are　　　　　C． which are　　　　 D． which were

22． Keep away from such things ＿＿＿＿＿＿ will do you harm．

　　　A． as　　 　　 B． that　　　 C． to which　　 　 D． which

21． She won the first ＿＿＿＿＿＿ in the composition competition．

　　　A． medal　　　　 　B． prize　　　 　 C． model　　　 　 D． name

20． -How often do you write to your friend？

　　　-＿＿＿＿＿＿．

　　 A． Each three weeks　　　　　　 　B． Three weeks ago

　　 C． Every three weeks　　　　　　 　D． In three weeks’ time

19． My grandpa was in the Red Army， and he ＿＿＿＿＿＿ the Long March．

　　　A． joined　　 　B． attended　　　 C． took part in　　　 D． took

18． In this forest there are more or less 15 kinds of snakes，＿＿＿ five are　very dangerous．

　　　A． which　　　 　B． of them　　　 C． of which　　 　 D． in which

17． What a pity！My new computer doesn’t work．＿＿＿＿ must be something wrong　with it．

　　　A． It　　　　 　B． There　　　　 C． This　　　　　 D． That

16． Time is up． ＿＿＿＿＿＿ your examination papers，please． 　

　　　A． Hand in　　　 B． Hand out　　　　　C． Hand over　　　　 D． Hand up

15． First of all，please ＿＿＿＿＿＿ me to introduce myself to you．

　　 A． make　　 　 B． agree　　　 C． let　　　　　 D． allow

14． ＿＿＿＿ many young people would rather buy expensive things though they　haven’t enough money．

　　 A． At a time　 　　　　　　　　　　　　　B． At one time　　

　　　C． In modern times　　 　　　　　　　　 D． In time