II. 单项选择（共20小题；每小题1分，满分20分）
21. It’s said that there is a(n) ________ amount of food in the world, but it just isn’t available to all the people who need it.
A. adequate B. professional C. compulsory D. genuine
22. According to the instructions, the medicine can bring much ________ from the pain.
A. effect B. comfort C. relief D. relaxation
23. --You should know bungee jumping is dangerous.
--Yes, but I can’t simply ________ the excitement it brings to me.
A. reject B. restrict C. prevent D. resist
24. There is no doubt ________ you will make greater progress this term if you work harder.
A. which B. whether C. that D. if
25. ________ I’m concerned, it’s the best movie I have ever seen.
A. As much as B. As long as C. As soon as D. As far as
26. ________ at my childhood, I always recall the days when I enjoyed myself on the grassland.
A. Holding back B. Looking back C. Taking back D. Bringing back
27. It was not until he arrived home ________ he realized he had forgotten to turn off his computer in the office.
A. when B. before C. that D. while
