The Peppered Moth, a kind of insect(昆虫), is found in England. It is light brown in colour and likes to settle(栖息) on trees which are also light brown. This makes the moth difficult to be seen and birds are less likely to notice and eat it.

But with the development of industry(工业) , smoke from factories began to reach the trees where the moth settled. It made the trees blacker. Then something very strange took place: in industrial areas, the Peppered Moth began to change colour. It became darker as well. Though the change took several years, some scientists soon notice that newly-born moths were a little darker than usual.

A scientist with the name Kettlewell decided to make a careful study of this phenomenon(现象). He marked some of the light moths and some of the darker ones, and set them free in the woods near Bermingham, an industrial city. Later, he recaptured(重新捕获) as many as the marked moths as possible. The results were as follows.

Kettlewell's research (研究) was done in the early 1950s. Soon afterwards Britain introduced new laws to reduce smoke and factory pollution.

Can you imagine what would happen to the Peppered Moth as the air became cleaner again?

1.The Peppered Moth began to change its colour in industrial areas because         .

A．it itself liked to

B．it could be like the colour of its living-place

C．it had to keep the balance of nature

D．it was usually dark brown

2.From the results of Kettlewell's research, we can see that       .

A．many more of the light moths were killed or eaten

B．more than one-fifth of the light moths was not killed

C．three times as many dark moths were kept safe as light ones

D．more dark moths were killed in industrial areas

3.As the air became cleaner,        .

A．the number of the light moths became larger

B．the total number of the light moths remained unchanged

C．there were more of the darker moths and fewer of the light ones

D．the darker moths changed into the light ones suddenly

It is often necessary to release a fish, that is, set it free after catching, because it is too small, or you just don’t want to take it home to eat. In some cases, releasing fish is a good measure that will help keep fish variety and build their population size. The Department of Game and Inland Fisheries (DGIF) encourages fishermen who practice catch-and-release fishing to use a few simple skills when doing so. The advice provided below will help make sure that the fish you release will survive to bite again another day.

—When catching a fish, play it quickly and keep the fish in the water as much as possible.

  Don’t use a net in landing the fish and release it quickly to prevent it from dying.

—Hold the fish gently. Do not put your fingers in its eyes. Don’t wipe the scales (鱼鳞) off the fish because it might cause it to develop a disease and reduce its chance of survival.

—Remove your hook (鱼钩) quickly. If the hook is too deep or hooked in the stomach, cut the line and leave the hook in. The hook left inside will cause no serious problem to the fish.

—Take good care of the fish by moving it gently in water. Release the fish when it begins to struggle and is able to swim.

—Do not hold fish in a bucket or some other containers and later decide to release it. If you are going to release a fish, do so right away.

With a little care and by following the suggestions given above, you can give the released fish a better chance of survival.

1. People sometimes set a fish free after catching it because they _________.

A. don’t want it to die               B. hope it will grow quickly

C. don’t want to have it as food        D. want to practice their fishing skills

2. Which of the following will probably make a fish ill?

A. Taking the hook off it.             B. Removing its scales.

C. Touching its eyes                 D. Holding it in your hand.

3. A proper way to release a fish is to _________.

A. move it in water till it can swim         

B. take the hook out of its stomach

C. keep it in a bucket for some time       

D. let it struggle a little in your hand

4.What is the purpose of the test?

A. To show how to enjoy fishing.       

B. To persuade people to fish less often.

C. To encourage people to set fish free.   

D. To give advice on how to release fish.

It is often necessary to release a fish, that is, set it free after catching, because it is too small, or you just don’t want to take it home to eat. In some cases, releasing fish is a good measure that will help keep fish variety and build their population size. The Department of Game and Inland Fisheries (DGIF) encourages fishermen who practice catch-and-release fishing to use a few simple skills when doing so. The advice provided below will help make sure that the fish you release will survive (存活) to bite again another day.

－When catching a fish, play it quickly and keep the fish in the water as much as possible. Don’t use a net in landing the fish and release it quickly to prevent it from dying.

－Hold the fish gently. Do not put your fingers in its eyes. Don’t wipe the scales(鱼鳞) off the fish because it might cause it to develop a disease and reduce its chance of survival

－Remove your hook(鱼钩) quickly. If the hook is too deep or hooked in the stomach, cut the line and leave the hook or the hook left inside will cause no serious problem to the fish.

－Take good care of the fish a moving it gently in water. Release the fish when it begins to struggle and is able to swim.

－Do not hold fish in a bucket or some other containers and later decide to release it. If you are going to release a fish, do so right away.

With a little care and by following the suggestions given above, you can give the released fish a better chance of survival.

1.People sometimes set a fish free after catching it because they           .

A. don’t want it to die                       B. hope it will grow quickly

C. don’t want to have it as food              D. want to practice their fishing skills

2.Which of the following will probably make a fish ill?

A. Taking the hook off it.                 B. Removing its scales.

C. Touching its eyes.                     D. Holding it in your hand.

3.A proper way to release a fish is to           .

A. move it in water till it can swim               B. take the hook out of its stomach

C. keep it in a bucket for some time               D. let it struggle a little in your hand

4.What is the purpose or the text?

A. To show how to enjoy fishing.               B. To persuade people to fish less often.

C. To encourage people to set fish free.       D. To give advice on how to release fish.

Harriet Tubman lived a life filled with adventure.Tubman worked with the Underground Railroad. She helped many slaves reach freedom in the North. She was a scout(侦察员)in the Civil War. She also worked as a nurse during the war.

Life in the Old South was very hard for slaves. Most slaves lived in small houses.They had large families, and even the children had to work in the fields.Most slaves dreamed of getting to the north.They wanted to be free.

One day Harriet saw a slave trying to run away. Then she saw the keeper running after him with a whip.Harriet stood in the keeper's way.The keeper took a weight and threw it at the slave.He hit Harriet above her eyes.It almost killed her. The scar(伤疤)on Harriet's head was an emblem(向征)of her will to fight for what she believed in.

The Fugitive(逃亡)Slave Law made Harriet's job harder.The law said that slaves could be caught even in the North. Harriet began leading slaves all the way into Canada.There they were safe.The law couldn't hurt them there.

When Harriet came for her mother and father,they were very old.Harriet was afraid they might not be able to make the trip.She got a horse.She and a friend made a wagon.She helped her mother and father ride to freedom.

The story mainly tells us about______.

A.life of the slaves in the Old South

B.life of Harriet Tubman

C.Harriet Tubman's fight for freedom for the slaves

D.the Civil War

According to the story,which of the following statements is NOT TRUE?______.

A.Harriet Tubman used to work as a nurse during the Civil War.

B.The weight hit Harriet in the head and left a scar on her head.

C.Harriet led slaves to Canada where the law couldn't hurt them.

D.The Fugitive Slave Law protected running slaves in the North.

The Fugitive Slave Law______.

A.protected running slaves

B.set slaves free

C.offered good jobs for slaves

D.made Harriet's job more difficult

We can infer from the story that the author______.

A.was in favor of slavery

B.was supportive about Harriet's work

C.thought the Fugitive Slave Law was good

D.thought slaves were treated well in the North

   It is often necessary to release a fish, that is, set it free after catching, because it is too small, or you just don’t want to take it home to eat. In some cases, releasing fish is a good measure that will help keep fish variety and build their population size. The Department of Game and Inland Fisheries (DGIF) encourages fishermen who practice catch-and-release fishing to use a few simple skills when doing so. The advice provided below will help make sure that the fish you release will survive (存活) to bite again another day.

—When catching a fish, play it quickly and keep the fish in the water as much as possible.

Don’t’ use a net in landing the fish and release it quickly to prevent it from dying.

—Hold the fish gently. Do not put your fingers in its eyes. Don’t wipe the scales (鱼鳞) off the   fish because it might cause it to develop a disease and reduce its chance of survival.

—Remove your hook (鱼钩) quickly. If the hook is too deep or hooked in the stomach, cut the   line and leave the hook in. The hook left inside will cause no serious problem to the fish.

—Take good care of the fish by moving it gently in water . Release the fish when it begins to   struggle and is able to swim.

—Do not hold fish in a bucket or some other containers and later decide to release it. If you are   going to release a fish, do so right away.

With a little care and by following the suggestions given above, you can give the released fish a better chance of survival. 

1. People sometimes set a fish free after catching it because they _________

2.Which of the following will probably make a fish ill?

3. A proper way to release a fish is to _________.

4.What is the purpose of the test?