The crow (乌鸦)is an ordinary(普通的) bird. It is about twenty inches(英寸) long and black all over. Crows are dirty birds because they live on old bad food. Crows eat a lot of waste food. In this way they are more useful to us than any birds. They clean up the dirty things in our streets. Crows are always hungry. They look for food all day long, and in the evening you can see them in large numbers flying back to their nests(窝) in the trees. They sleep there at night.

Crows are much noisier than other birds. Very often a large number of crows will get together on one house and talk. Sometimes they talk together, and sometimes they do it by turns like human beings(人类). It is easy to tell from(区别) crows’ sounds whether they are pleased or angry. Perhaps crows talk a lot because they are friendly birds. A pair of crows will live together all their lives, and if one of them dies, the other one becomes very sad and quiet for the rest of its life and sometimes it dies, too.

1.Why are crows dirty?

A. They are black all over the body.

B. They like to eat dirty food.

C. They usually talk.

D. They don’t have baths.

2.Why are crows more useful to us than any birds?

A. They are usually noisy.

B. They are usually dirty.

C. They are flying in large numbers.

D. They eat a lot of waste food.

3.You can tell from crows’ sounds _________.

A. whether they are hungry or full

B. whether they are pleased or hungry

C. whether they are ill or healthy

D. whether they are living or dead.

Mike Myers is a teacher at Chauncey Rose High School in Terre Haute, Indiana. Last year, he taught his students about the world’s rain forests. They learned that rain forests are important because the plants and animals of the rain forest give us food, wood, and medicine.

Destruction of the world’s rain forests is a serious problem. Unluckily, rain forests are disappearing at a rate of 80 acres per minute! As part of a class project, Myers’ students bought three acres of rain forest in Central America. They paid $25 per acre. The students hope that the land they bought will be protected and not destroyed. The students became so interested in rain forests that they decided to get a closer look at a real rain forest.

So last June, Myers and four of his students took a boat ride down a river. They saw alligators and crocodiles. In the middle of the week, a guide took Myers and his students into the rain forest. “The monkeys were not happy that we were in their forest. They broke small branches off the trees and threw them at us,” one of the students said, “It was a great learning experience for all of us,” said Myers.

Each student chose something specific about Costa Rica to study involving the plants, animals, food, and culture. During the last few days the group had time to do fun activities. They went whitewater rafting and horseback riding, and visited Costa Rica’s active volcano.

Myers hopes to make the trip every year with a different group of kids.

1.How much did Myers’ students pay for the rain forest they bought?

A. $25 B. $75 C. $80 D. $2000

2.What did Myers and his students do at the beginning of the trip?

A. They went into the rain forest.

B. They bought acres of rain forest.

C. They took a boat ride down a river.

D. They visited Costa Rica’s active volcano.

3.The word “Destruction” in paragraph 2 probably means “the process of being ______.”

A. destroyed B. developed C. described D. discovered.

4.When the monkeys saw Myers and his students, they _________.

A. felt excited B. felt angry

C. jumped off the trees D. left the rain forest

5.The passage mainly shows that Myers and his students ________.

A. did something to protect rain forest

B. wanted to buy the rain forest in Costa Rica

C. were interested in the culture of Costa Rica

D. went to the rain forest for various fun activities

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