阅读下列短文,从每题所给的四个选项(A、B、C、D)中,选出最佳选项。

It’s a time when school,homework,active social lives and pare-time jobs keep teenagers busy from early in the morning until late at night.They are likely to try to make up for a lack of sleep by “sleeping in” on the weekends.Unfortunately,this causes irregular sleep and actually makes the problem worse.

Most teenagers are not able to fall asleep until late at night.Since many teens aren’t sleepy until around 11 pm.but need to be at school by 7:30 or 8:00 am .They cannot get enough sleep .During puberty(青春期),the biological clock in the brain naturally re-sets to a later time ,and this causes teens to fall asleep later.Then ,when it’s time to get up ,a teen’s body clock is likely to still be producing the night-time hormones .This makes it hard for them to feel active and energetic in the morning.

A growing body of research suggests that starting high school later improves attendance,achievements and grades.A few years ago in an important study ,test scores on the SAT college entrance exams in Edina,Minnesota jumped more than 100 points on average,when the morning school bell rang an hour later.Unfortunately,most schools are not set up to start later and fail to satisfy teen’s sleep needs.

1.What effect does “sleeping in” on the weekends have on teenagers?

A.Improving their health

B.Weakening their energy

C.Disturbing their biological clock

D.Making up for their hormone loss

2.The study in Minnesota shows that starting morning school one hour later helps to______.

A.make teenagers grow faster

B.change teenagers’ sleep needs

C.do more research on teenagers

D.improve students’ achievements

3.The text helps us to know more about teenagers’______.

A.daytime activities B.sleeping habits

C.mental problems D.studying methods

阅读理解。

Haikou—A shark was killed after being dragged to shore at Yalong Berth beach in Sanya, South China’s Hainan Province, on Sunday afternoon.

It was the first time a shark had been caught in the beach area, a popular tourist site in Hainan.

Local fishermen said they caught the 3-meter-long, l-ton shark by chance when they were fishing in sea water 1,000 metres deep near the beach.

Police temporarily protected the shark while oceanographers(海洋学家) decided whether it was a species belonging to State protection.

Fishermen later killed and sold the shark after oceanographers confirmed that it was a whale shark and therefore not under State protection.

The shark was believed to have drifted into the area from the deep sea due to strong waves caused last week by Typhoon Imbudo.It had no open injuries but experts said they believed it suffered from internal bleeding.

Local police officer Fu Chenggeng said beachgoers should not feel threatened by sharks because the fish never attack human beings on their own initiative.Fu said he had never heard of any shark attacks at the Sanya beach since he first started work there eight years ago.

However, police said they will improve the security system to safeguard tourists’ safety on the beach.

1.A possible title of the article should be______.

A.Tourists in Danger

B.Killing Whale Shark

C.Shark Caught in Beach Area

D.Whale Shark in Danger

2.From the article it can be learned______.

A.the shark was caught because of obvious injuries

B.the number of the whale shark may be small

C.typhoon Imbudo may have brought the shark to the area

D.it’s not unusual to see a shark on the beach

3.The underlined word“confirmed”probably means______.

A.said B.believed

C.thought D.made sure

阅读理解。

Like human beings,dogs may catch cold because of cold weather,wet conditions or can also get it from other sick dogs.If a dog has a running nose and watery eyes,coughs or sneezes(打喷嚏),then it is quite probable that the dog has caught cold.

A dog's cold can get over after a few days without treatment but it totally depends upon the owner to treat it with medications or improve its immune power (免疫力) to get rid of the cold naturally.Following are some of the things you can do if your dog gets a cold.

You can improve its immune power by giving it proper nutrient diet.Healthy food can really do wonders.Try to give it food which is either suggested by the vet(兽医)or is healthy for your pet.Increase the intake of food which is rich in vitamins A,C and E.

Keep your dog warm.The best place for your dog in winter is inside your house.Do not keep your dog outside when it is cold and wet.At home you can also keep the dog warm with the help of carpets.This will make him comfortable and help him to recover fast.

Increase the fluid(流质)intake as it helps a lot.Water can be the best choice but you can also add broth (肉汤)in water which will give your dog strength.Warm water will make your dog more comfortable and will also keep the dog away from the respiratory infections(呼吸道感染).

Steam treatment is considered to be effective in getting rid of cold.It makes the nasal(鼻的) passage (通道)wet,which helps proper breathing.Just fill your bathroom with steam and leave your dog inside the bathroom for 15 minutes.Do it nearly 2 to 3 times a day and you will see your dog recovering.

These are some of the things you can do to help your dog recover from cold.However,if you are not able to find any improvement in its health,then turn to the vet for help immediately.Take your dog for regular checkups so as to avoid complications(并发症).

1.rom the first paragraph we know about __________.

A.the difficulty in keeping a dog as a pet

B.characteristics (特征)of sick dogs

C.the similarities between dogs and human beings

D.causes and symptoms(症状)of cold in dogs

2.When your dog catches cold,you should feed it on _______.

A.its favorite food

B.the suggested food by the vet

C.some meat and water

D.food rich in vitamin B

3.When a dog catches cold,it is wrong to ________.

A.keep it inside during cold and wet weather

B.leave it inside the bathroom full of steam

C.let it eat too much solid (固体) food

D.keep it sleeping on rugs at home

4.It can be learnt from the text that _________.

A.a dog’s cold can always disappear naturally

B.it’s quite easy to make a sick dog recover from cold

C.treating a dog’s cold sometimes needs a vet’s help

D.cold in dogs won’t spread between each other.

My friend Jim was a well-known radio host, who worked at a radio station all his life. All his colleagues knew him about one characteristic: If he’s on-air, he is always wearing a suit and a tie. They laughed at him, saying, “No one ever sees you. Why do you dress like that?” But he always turned that into a joke.

One day Jim was invited to appear on the TV. There was a show for the oldest radio employees. For the first time his fans, who only knew Jim by his voice, would see him. Before the recording of the show, the director came to Jim and asked, “Usually you arrive on time, but today you are 10 minutes late. It’s not terrible, but I still want to know why.”

“You see,” Jim answered, “at the last moment when I was already dressed up, I noticed that I didn't have new socks. For the first time I was invited to the television, and I thought that simply wearing clean socks was not enough. So I needed to go to the store for new socks.”

The director was surprised. He asked, “Why do you need new socks? You could have come without the socks because we will be filming you only over the waist.”

“ You see, to be perfect, I need to feel myself perfect in everything, starting with the shirt and finishing with the pen in my pocket,” Jim said. “And if my socks have holes in them or my shoes are dirty, I’m not spotless anymore. And it may make me less confident.”

1.From Para. 1 we can learn that when Jim is on-air, he______.

A. likes telling jokes

B. behaves strangely

C. always wears the same clothes

D. is careful about his dress

2.Jim was late for the TV show because______.

A. he went to buy new socks

B. he didn’t like to be filmed

C. he had to clean his clothes

D. he was too nervous

3.For Jim, being perfect in everything ______.

A. brings him success

B. makes him popular

C. gives him confidence

D. is difficult but necessary

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