The weather is getting hotter. You are thirsty playing basketball or riding home from school. A cold drink may be just the thing. But be careful what you are drinking. Something that looks cool may not be good for your health.

There are plenty of "energy drinks" on the market. Most of them have beautiful colors and cool names. The lists on them tell you they are helpful to your health. Sounds great!  

But after a careful check you may find that most energy drinks have lots of caffeine (咖啡因) in them. These drinks are especially aimed at young people, students, busy people and sports players. Makers sometimes say their drinks make you better at sports and can keep you awake. But be careful not to drink too much.

Caffeine makes your heart（心脏）beat fast. Because of this, the International Olympic Committee has limited(限制) its use. Caffeine in most energy drinks is at least as strong as that in a cup of coffee or tea. Possible health dangers have something to do with energy drinks. Just one box of energy drink can make you nervous, have difficulty sleeping and can even cause heart problems. Scientists say that teenagers should be discouraged from taking drinks with a lot of caffeine in them.

1.The main reason for people not to drink too much energy drinks is that they may cause      .

A．heart problems                         B．nervousness

C．sleeping difficulty                       D．possible health dangers

2.The underlined word "discouraged" can be replaced(替换) with "________".

A．encouraged        B．stopped           C．helped           D．disliked

3.From the passage we can know that _________.

A．advertisements are important in getting people to buy energy drinks

B．energy drinks are helpful to teenagers' study

C．sports players need to drink a lot of energy drinks

D．energy drinks are especially aimed at teenagers

"Can I see my baby?" asked the happy new mother. When the baby was in her arms, she couldn't believe her eyes. The baby was born without ears.

Time proved(证明) that the baby's hearing was very good though he had no ears. He got on well with his classmates. But one day, he said to his mother, tears in his eyes, "A big boy called me a freak (畸形的)."

　　The boy's father asked the family doctor. "Could nothing be done?"

　　"I believe I could graft (植入) on a pair of outer ears if they could be got," the doctor said. They tried to find a person who was helpful for the young man.

　　One day, his father said to the son, "You're going to the hospital, son. Mother and I have someone who will donate the ears you need. But we must keep it a secret who the person is."

　　The operation(手术) was a great success, and a new person appeared. His cleverness and hard work made him a very successful person. He married and lived a happy life.

　　He once asked his father, "Who gave me the ears? I could do enough for him or her."

　　"I do not believe you could, "said the father." The agreement was that you are not to know...not yet."

　　For years they kept it a secret, but the day did come. He stood with his father over his mother's body. Slowly, the father raised the thick, brown hair. To his surprise, the son found his mother had no outer ears.

　　"Mother said she was glad she never needed to cut her hair," his father said in a low voice, "and nobody ever thought mother less beautiful, did they?”

1.The mother was surprised to see her baby for the first time because the baby__.

2.The sentence"...a new person appeared." means"______."

3.Why did the boy's mother never cut her hair?

4.Which of the following is true according to the passage?

5.Which is the best title for the passage?

If Tom _____ the game, we'll give him a surprise".

A. win           B. wins        C. won          D. miming

—"Merry Christmas! Boys and girls".—______________..

A. Thank you very much.        B. You are very kind

C. The same to you             D. Never mind.

During the day, you spend a lot of time running, jumping, laughing, eating, and talking. You use up a lot of energy(能量) , and by the end of the day you're tired. Sleep gives your body a chance to rest.

But your brain (大脑)and body are not completely at rest during sleep. While you sleep, your mind may think of the things that happened during the day. It keeps the important things in mind as memories(记忆). It also thinks about things you were worrying about, and you may wake up with answers to some of your problems.

You also grow while you sleep. The thing called "human growth hormone (荷尔蒙)" in the body helps you grow during sleep. This growth hormone also helps the body to repair itself.

Sleep helps your body to conserve energy too. You use up a lot of energy during your daily activities. But when you sleep, your body temperature falls, and your "metabolism" (新陈代谢) slows down. You are still using some energy, but much less than when you are awake and active.

Have you ever stayed up past your bedtime? Did you have difficulty getting up the next morning? Maybe you had problems seeing clearly or you cannot think clearly. That was your body's way of saying, "I need sleep！" A lack ( 缺乏) of sleep can stop your body and mind from working correctly.

1.What does "human growth hormone" do while people sleep?

2.According to the passage, which of the following tells you need sleep?

3.What does the underlined word "conserve" mean?

4.What is this passage mainly about?