A. symbol B. physical C. apply D. ceremony

C. it seems remarkable how D. how seems it remarkable

11. He asked me and his friends________his pens. A. when did he put B. where he puts C. where he had put D. where had he put 12. Scientists are now beginning to carry out experiment on _______ trigger different sorts of health risk. A. noise pollution can B. that noise pollution C. how noise pollution D. how noise pollution can 13. _______ the French army was defeated at the battle of Dien Bien Phu came a complete surprise to all over the world.

A. Why B. Which C. What D. That 14. _______ is not clear to researchers.

A. Why did dinosaurs become extinct B. Why dinosaurs became extinct C. Did dinosaurs become extinct D. Dinosaurs became extinct

15. Elderly people,________, require constant attention. A. a large number’s depending on government aid. B. and many of them depend on the government to finance them C. who are dependent many of them on the financing from the government D. many of them who are financially dependent on the government 16. Coming unexpectedly in to the room,________. A. so she made the intruder get surprise B. the appearance took the intruder by surprise C. it surprises the intruder with her appearance D. she took the intruder by surprise 17. Having been asked to speak at the conference,________. A. some notes were prepared for Dr. Clark B. some notes were prepared by Dr. Clark C. Dr. Clark prepared some notes D. audiences were pleased to hear Dr. Clark 18. The students were not satisfied________.

A. because of the teacher’s not informing them of the coming test B. because the teacher not inform them of the coming test C. as the teacher’s not informing them about the coming test