27.He was surfing the Internet____the electricity was cut off.

　　 A．while　　 　　　 B．however　 　　 C．but　　　　　　 　　 D．when

26.-How about putting some pictures into the report?

　 -____ A picture is worth a thousand words.

　　 A．No way.　 　　 B．Why not?　 　　 C．All right?　　 D．No matter.

25.To enjoy just how great____is to be alive, we have to look around to add to life experience.

　　 A．that　　 　　　 B．one　　　 　　 C．it　　　　　　 　　 D．all

24.____you decided to take up, you should try to make it a success.

　　 A．If only　 　　　　 B．Unless　　 　　　 C．Whenever　　　 　 D．Whatever

23.Unless____to speak，you should remain silent at the conference.

　　 A．invited　 　　　　 B．inviting　 　　　　 C．being invited　 　　　　 D．having invited

22.He made another wonderful discovery, ____of importance to science.

　　 A．which I think is　 　　　　 B．which I think it is

　　 C．which I think it　 　　　　 D．I think is

第一节：单项填空(共15小题；每小题1分，满分15分)

从A、B、C、D四个选项中，选取出可以填写入空白的最佳选项，并在答题卡上将该项涂黑。

21．-Is____stronger of the two boys Peter?

-If you take____second look, you will find it’s his twin brother Jim.

A．the; a　 　　　　　　　　 B．a; the　 　　　　　　　　　 C．a; a　 　　　　　　　　　　 D．the；the