Height is just one of the thousands of features your genes(基因)decide. In fact, because you have two parents, your genes provide you a height that usually lands somewhere between the height of each parent. If both your parents are tall, then most probably you will be tall, too, but if you have questions about how tall you're going to be, ask your doctor if he or she can help you find it out.

But genes don't decide everything. For example, eating an unhealthy diet can keep you from growing to your full potential(潜力). Getting plenty of sleep and enough exercise will help you grow to the expected height.

No doubt(怀疑) you're wondering how fast you should grow. It depends. There's no perfect or right answer. Generally speaking, kids grow about 2 inches (6 centimeters) a year between age 3 and the time when they start puberty (when your body starts changing and becoming more grown up).

Your doctor will know how your growth has been going over the years. Two centimeters here and 2 inches there are not nearly as important as the height you're at now, how you've been growing up to this point, and what other changes your body may be going through.

Don't be scared if you seem to have grown a lot in a very short time. Everyone has a growth spurt（高峰）during puberty. The age for starting puberty is about 10 for girls and about 11 for boys. But it can be earlier or later ——between 7 and 13 for girls and 9 and 15 for boys.

You'll usually begin to notice that you're growing faster about a year or so after your body starts to show the first changes of puberty.

If you want to know how fast and how tall you should grow, ____________.

   A. you should have enough exercise           B. you can ask doctors for help

   C. you should save the environment           D. You can record your growth during puberty

This passage is mainly about ____________.

   A. how the genes work in your body           B. when is the time you grow fast

   C. why you look like your parents                D. how you grow to a certain height 

After reading this passage, we can explain ___________.

   A. how good it is to be a doctor             B. how much sleep time we need

   C. why genes can’t decide everything            D. what healthy diet is

Which is NOT mentioned in the passage?

   A. Your height most probably depends on how high your parents are.

   B. Girls’ age for starting puberty is usually earlier than that for boys’.

   C. The time showing the first changes of puberty is never noticed.

   D. You may be scared sometimes when you grow too fast.

John is ______ European but doesn’t know or speak ______English language at all.

A. an，a          B. a，the     C. the ，an        D. a，不填

Mr. White        his racing bicycle by himself yesterday, but I am not sure whether it is ready.

A. repaired             B. had repaired    C. was repairing    D. would repair

— Did you meet with the famous space hero?

   — ___________ I had come here earlier.

A. If only        B. If not          C. But for      D. For fear

I want to buy that kind of cloth because I ________ the cloth washes well.

A. have told        B. have been told   C. have been telling        D. told

E

Once upon a time in a land far away, there was a wonderful old man who loved everything：animals, spiders, insects...

One day while walking through the woods the nice old man found a cocoon（茧）of a butterfly. He took it home. A few days later, a small opening appeared; he sat and watched the butterfly for several hours as it struggled to force its body through that little hole. Then it seemed to stop making any progress. It appeared as if it had gotten as far as it could and it could go no farther. Then the man decided to help the butterfly, so he took a pair of scissors and snipped off the remaining bit of the cocoon.

The butterfly then emerged（露出）easily.

But it had a swollen body and small, shriveled wings. The man continued to watch the butterfly because he expected that, at any moment, the wings would enlarge and expand to be able to support the body, which would contract（收缩） in time. Neither happened! In fact, the butterfly spent the rest of its life crawling around with a swollen body and shriveled wings.

It never was able to fly.

What the man in his kindness and haste did not understand was that the restricting cocoon and the struggle required for the butterfly to get through the tiny opening were Nature's way of forcing fluid from the body of the butterfly into its wings so that it would be ready for flight once it achieved its freedom from the cocoon.

 Sometimes struggles are exactly what we need in our life. If we were allowed to go through our life without any obstacles, it would cripple us. We would not be as strong as what we could have been.

And we could never fly.

In the story, what happened to the cocoon of the butterfly after the man’s help?

A. The cocoon was broken and the butterfly died.                   

B. The man helped the butterfly out of the cocoon more easily

    C. The butterfly couldn’t fly for ever normally.                              

    D. The butterfly should spend more time practicing flying.

What would have happened to the butterfly without the old man’s help?

    A. It would have died in the cocoon.       

    B. It would have become a true butterfly.

    C. It would have been strong enough to go farther.

    D. It would have stopped struggling through the cocoon.

The underlined word “cripple” in Paragraph 7 probably means ______.

    A. disable              B. climb                C. enable               D. beat

What can we learn from this story?

    A. Man can never go against nature.

B. It’s necessary to live with some difficulties.

C. One cannot help others without thinking twice.

D. Mankind should take good care of insects.

The building around the corner caught fire last night. The police are now ______ the matter.

   A. getting through   B. working out      C. looking into     D. watching over

He dressed himself quickly, _____ his schoolbag and went to school.

A. carrying                   B. to carry                    

C. carried                D. carries

Dr．Sylvia Earle wants you to stop eating fish．It's not because fish are endangered，though wild fish stocks in many oceans are very low．It's not because they're bad for you, though fishin many areas are exposed to poisonous substances in the water．It's because they're smart．

    "Fish are sensitive, they have personalities’，says the marine biologist．For Earle, eating afish would be like eating a dog or a cat．“I would never eat anyone I know personally.”

    There's a lot more to fish than meets the eye: they talk to each other, they like to betouched, and they engage in behavior that can seem very human．They can remember thingsand learn from experience．Earle and a growing number of animal rights activists see these asstrong arguments against eating fish altogether．

    The activists also point out that fish feel pain and fish suffer horribly on their way from the sea to the supermarket．“While it may seem obvious that fish are able to feel pain, likeevery other animal, some people think of fish as swimming vegetables，” says Dr. Lynne Sneddon. “Really，it's kind of a moral question．Is the enjoyment you get from fishing （oreating fish） more important than the pain of the fish?”

    Fishermen and （fried） fish lovers are doubtful．"I've never seen a smart fish," says Marie Swaringen as she finishes off a plate of fish at a Seattle seafood restaurant．“If they were verysmart, they wouldn't get caught．"

    “For years, everyone's been telling us to eat fish because it's so good for us，” says another diner．‘‘Now I've got to feel guilty while I'm eating my fish? What are they going to think of next? Don't eat salad because cucumbers have feelings?"

Dr．Sylvia Earle discourage people from eating fish because    ．

    A．there are not that many wild fish in the ocean

    B．fish actually are sensitive and have personalities

    C．some ocean fish contain poisonous substances

    D．fish are like dogs or cats that people know personally

We can infer from the passage that      ．

    A．all people don't agree with the idea to stop eating fish

    B．people will be persuaded not to eat fish in the future

    C．stopping eating fish will lead to people's not eating vegetables

    D．we shouldn't care too much about the feeling of fish

By saying "There's a lot more to fish than meets the eye, " the writer means  ．

    A．there are far more fish than other animals in the world

    B．there are more fish in the world than people can see

    C．people can see more fish if they pay more attention

    D．fish are not that simple as they appear to people's eyes

What is the writer's attitude towards people eating fish?

    A．Neutral．    B．Indifferent．    C．Approving．  D．Opposed．

A great person is always putting others’ interests _________ his own.

A. below     B. above    C. in    D. on