13. Solar energy heating system is an _____ method of heating.
A. economic B. economy C. economics D. economical
12. ---- I’ve put my name down for the expedition trip to Antarctica.
-----_________.
A. Is that all? B. That’s all right.
C. I believe what you said. D. Are you serious?
11. _______ there was no conclusive evidence, most people thought he was guilty.
A. When B. As far as C. As long as D. While
10. ________ I call on him, he is out.
A. The moment B. So far as
C. Every time D. Any time
9. If you stand here, you'll get a better ________ of the river.
A. sight B. view C. scene D. scenery
8. ______ in the regulations that you should not tell other people the password of your e-mail account.
A. What is required B. What requires
C. It is required D. It requires
7.When Captain Bligh arrived in Tahiti, it became clear that it would be some months ______ the breadfruit trees were ripe and ready to be taken to the West Indies.
A. that B. before C. since D. then
6.By sunset we had _________ thirty miles.
A. advanced B. covered C. charged D. marched
5. The film “A World without Thieves” _______ a great success and brought in a large profit to the cinema.
A. appreciated B. enjoyed C. won D. seized
4. By the time Jane gets home, her aunt________ for London to attend a meeting.
A. will leave B. leaves C. will have left D. left