Ⅱ。 Vocabulary and Structure (40 points)
Directions：
There are 40 incomplete sentences in this section. For each sentence there are four choices marked A， B， C and D. Choose one answer that best completes the sentence and blacken the corresponding letter on the Answer Sheet.
11. Which is ______ country， the United States or Canada?
A. a larger B. larger C. the larger D. the largest
12. The silk feels ________.
A. soft B. softly C. softness D. softy
13. Two nuclear power stations _______ in the past ten years.
A. are built B. have been built C. would be built D. are building
14. They kept on ______ till they got to the foot of the hill.
A. to run B. running C. runing D. run
15. There is much work to do， _______?
A. isn‘t it B. is there C. isn’t there D. is it
16. _______ as he is， he can‘t understand the English film.
A. A student of English B. Though a student of English
C. Student of English D. Being a student of English
17. The old in the country _______ taken good care of.
A. have B. has C. is D. are
18. Not a single mistake _______ in the test.
A. he made B. did he make C. he has made D. made he
19. ______ my surprise， I got a high grade in this test.
A. For B. To C. To be D. On
20. She never agree _______ you， did she?
A. to B. with C. in D. at