内容正文:
Unit 4 Topic 1
Section D
一、单项选择
1. Water pollution is one of ___________ in our country.
A. serious problem B. the more serious problems
C. most serious problems D. the most serious problems
2. Of all the students in our class, Jack is ___________.
A. taller B. tallest C. the tallest D. very tall
3. This is ___________ book in our library.
A. the most interesting B. most interesting
C. the more interesting D. more interesting
4. I think the song in the film Titanic is ___________ one of all the movie songs.
A. the most beautiful B. most beautiful
C. a beautiful D. much more beautiful
5. Mr. Smith thought the Century Park was the second ___________ in Shanghai.
A. large B. larger C. largest D. very large
二、完成句子
1. The baby stopped crying as soon as his young mother _______ (feed) him.
2. We must do something to protect the animals from _______ (dangerous).
3. Many animals are in danger. We must do something to p_______ them.
4. Thousands of rivers go into the s_______ at last.
5. Blue whales _______ the smallest sea animals. (以……为食)
三、短文填空
We sometimes say the lion is “the king of the jungle (丛林)” because it is 1 (strong) than the other animals. It can run 2 (fast) than most other animals and it can hunt best. The lion is the 3 (high) animal in the land food chain (食物链).
Who is at the top of the world’s food chain?
People are! We are not the 4 (big) or the fastest, but we are the 5 (clever). We invented cars and now we can move 6 (fast). We could not fight 7 (well) than a lion, so we invented guns. Now we can hunt best.
People’s inventions are 8 (clever), but they can be dangerous, too. For example, many years ago in Inner Mongolia, people used guns to kill a lot of wild wolves (狼).The wild wolves usually eat wild rabbits. But in recent year, the number of wild rabbits is becoming 9 (big and big) because the number of wild wolves is getting 10