The population of the world is increasing rapidly. By 2020, there could be 7.5 billion people on the earth. Will there be enough food for all these people? Some scientists think fish farming might solve this problem. However, other scientists worry that fish farming could bring serious environmental problems.

Fish farming is not a new thing. There were fish farms in China 3,000 years ago. Today, about one third of the fish we eat comes from fish farms.

Most fish farms raise plant-eating fish. Popular kinds of plant-eating fish are carp, tilapia, and catfish. However, many fish farms are starting to raise meat-eating fish. A popular type of meat-eating fish is salmon. However, it takes up to 5 tons of wild fish to produce just 1 ton of farm-raised salmon. So if this continued, many types of wild fish could become extinct.

Critics (评论家) of fish farming also say that farm-raised fish is unhealthy. They say there are dangerous chemicals (化学物质) in the fish. They also say fish farming pollutes the water. Some people say that the ways of farming being used now won’t produce enough fish anyway. Instead of building fish farms in lakes or near the coast, they say that the fish farms could be moved far out into the ocean. In the future, fish farms might be large cages that move to the ocean.

1.Which of the following about fish farming is true?

A. It is very popular around the world.

B. It is a new thing in 2010.

C. It appeared in China about thirty centuries ago.

D. It can solve the problem of the world’s population.

2._________ is not a kind of plant-eating fish.

A. Carp B. Catfish

C. Tilapia D. Salmon

3.What does the underlined word “extinct” mean?

A. 绝种的 B. 无家可归的

C. 弱小的 D. 惊慌失措的

4.How many reasons do the critics hold against the fish farming?

A. 2. B. 3. C. 4. D. 5.

5. What’s the passage mainly about?

A. One way to control the growth of population.

B. One way to feed more people.

C. One way to catch more fish.

D. One way to save the wild fish.

From:jenny@compmail.ca To: Li-Ming@net.cn

Subject: School! Date:01/09 9:04 PM

Hi, Li Ming,

Today was the first day of school. I am in Grade Seven this year. I have a new school. It’s big! There are 360 students. Every grade has four classes. There are 20 students in my class.

School is different this year.

This year, school begins at 8:30. Last year, school began at 8:45.

Last year, I had one teacher. This year, I have many teachers. Every teacher has a different classroom. We go from room to room for our classes. It’s good exercise!

On Wednesday, my cousin Brian arrives from the UK. He will live with my family this year. Brian is twelve years old, just like me!

Your friend,

Jenny

From: Li-Ming@net.cn To: jenny@compmail.ca

Subject: I like e-mail! Date: 02/09 6:10 PM

Hi, Jenny,

I was happy to see your e-mail. It’s fun to get e-mail from Canada! My school is big, too. It’s bigger than yours. There are about 550 students in my school, and three classes for every grade. My class has sixty pupils. We don’t have to go to different classes, but we have many different teachers. We have our classes in one room, and the teachers come to us. At my school, the teachers get the exercise!

Li Ming

1.Where does Jenny come from?

A. Canada. B. The UK. C. China. D. The USA.

2.When did Li Ming write his e-mail?

A. At 9:04 a.m. on September 1st.

B. At 9:04 p.m. on September 2nd.

C. At 6:10 a.m. on September 1st.

D. At 6:10 p.m. on September 2nd.

3. How do Jenny and her classmates have classes?

A. They go from room to room to have different classes.

B. They have their classes in their own classroom.

C. Their teachers go to them and they needn’t go anywhere.

D. They always have classes in a big classroom.

4.Who will live with Jenny’s family this year?

A. Li Ming. B. Brian.

C. Her best friend. D. Her uncle.

5.How many students are there in Li Ming’s class?

A. 360. B. 550. C. 60. D. 20.

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