19. Why do farmers give medicines to their animals according to the talk?

A. To fatten the animals. B. To make the meat delicious.

C. To make animals healthy.

20. How many human illnesses are related to food?

A. About 80%. B. About 60%. C. About 40%.

第二部分：英语知识运用(共两节, 满分45分)

第一节：单项填空(共15小题，每小题1分，满分15分)

21.--- Don’t forget to take the message to my teacher.

--- .

A.Yes, I will. B.No, I won’t. C.I don’t think so D.Sorry, I don’t

22.I will never forget my teacher’s advice: “As long as you can affect life of your child in an active way, you’ve been success.”

A./ ; the B.a; / C.a; the D.the; a

23.Don’t give up regardless of difficulty and failure, you’ll never achieve your goals.

A.and B.but C.or D.so

24.When asked about the secret about staying young, he said that a balanced diet _____ with exercise was the recipe for a healthy life.

A.conducted B.concluded C.combined D.connected

25. We will be losing money this year unless that new economic plan of yours ______ miracle.

A. works B. is working C. will be working D. worked

26. ______ _ more about Participant Service of Expo 2010, Shanghai China, call Hotline +86-21-962010.

A. To find out B. Finding out C. Find out D. Having found out

27. Teenagers have reached a point in their life _______ they are supposed to make decisions of their own for the first time.

A. which B. where C. how D. why

28. The magician picked several persons from the audience ______ and asked them to help with the performance.

A. by accident B. on occasion C. at random D. on average

29. It happened once, however, some seventy years ago, ______ the gold cup was stolen a few days before the race!

A. how B. that C. where D. what

30. He _______ the letter typed, but he decided to handwrite it and send it in person in order to show his sincerity.

A. must have had B. should have had C. would have had D. could have had