26. ---- Flight 302 to Pairs _______ until 7:30 tomorrow morning.

　 ---- No wonder I hear so many complaints from the passengers.

　 A. put off　　 　　　 B. has been put off

　　 C. will put off 　　 D. had been put off

25. ----Can I get the house cheaper?

　 ----Sorry, it’s _______ my power to sell it any cheaper..

　　 A. without　　 B. except　 C. beyond D. out

24. There is still much to discuss. We shall, ___________, return to this item at our next meeting.

　　 A. therefore　 　　 B. however C. otherwise　 D. briefly

23. Gradually, you will realize that the things that matter are _______ that can’t be

　 bought with money.

　　 A. these　 　 B. ones 　　 C. those 　 D. some

22. Seeing the happy _______ of children playing in the park, I’m full of joy and

　 confidence in the future of our country.

　 A. sight　　　　　 　 B. scene　　　　　 C. view　　　　 　 D. sign

从每题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

21. _________ recent report stated that the number of Spanish speakers in the U.S.

　 would be higher than the number of English speakers by_______ year 2090.

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

16、5A；535W

15、(1)1×10⁴V/m；(2)600V；(3)-200V