阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

　　Early one morning，more than a hundred years ago，an American inventor called Elias Howe finally fell asleep．He had been working all night on the design of a sewing machine but he had run into a very difficult problem：it seemed impossible to get the thread to run smoothly around the needle．

　　Though he was tired，Howe slept badly．He turned and turned．Then he had a dream．He dreamt that he had been caught by terrible savages（野人）whose king wanted to kill and eat him unless he could build a perfect sewing machine．When he tried to do so，Howe ran into the same problem as before．The thread kept getting caught around the needle．The king flew into a cage and ordered his soldiers to kill Howe．They came up towards him with their spears raised．But suddenly the inventor noticed something．There was a hole in the tip of each spear．The inventor awoke from the dream，realizing that he had just found the answer to the problem．Instead of trying to get the thread to run around the needle，he should make it run through a small hole in the center of the needle．This was the simple idea that finally made Howe design and build the first really practical sewing machine．

　　Elias Howe was not the only one in finding the answer to his problem in this way．

　　Thomas Edison，the inventor of the electric light lamp，said his best ideas came to him in dreams．SO did the great physicist Albert Einstein．Charlotte Bronte also drew in her dreams in writing Jane Eyre．

　　To know the value of dreams，you have to understand what happens when you are asleep．Even then，a part of your mind is still working．This is unconscious（无意识的），but still active part understands your experiences and goes to work on the problems you have had during the day．It stores all sorts of information that you may have forgotten or never have really noticed．It is only when you fall asleep that this part of the brain can send messages to the part you use when you are awake．However，the unconscious part acts in a special way．It uses strange images（图像）which the conscious part may not understand at first．This is why dreams are sometimes called“secret messages to ourselves”．

1．According to the passage，Elias Howe was ________．

[　　]

A．the first person we know of who solved problems in his sleep

B．much more hard-working than other inventors

C．the first person to design a sewing machine that really worked

D．the only person at the time who knew the value of dreams

2．The problem Howe was trying to solve was ________．

[　　]

A．what kind of thread to use

B．how to design a needle which would not break

C．where to put the needle

D．how to stop the thread from getting around the needle

3．Thomas Edison is spoken of because ________．

[　　]

A．he also tried to invent a sewing machine

B．he got some of his ideas from dreams

C．he was one of Howe's friends

D．he also had difficulty in falling asleep

4．Dreams are sometimes called“secret message to ourselves”because ________．

[　　]

A．strange images are used to communicate ideas

B．images which have no meaning are used

C．we can never understand the real meaning

D．only specially trained people can understand them

　　Early one morning, more than a hundred years ago, an American inventor called Elias Howe finally fell asleep．He had been working all night on the design of a sewing machine but he had run into a very difficult problem: It seemed impossible to get the thread to run smoothly around the needle．

　　Though he was tired, Howe slept badly．He turned and turned．Then he had a dream．He dreamt that he had been caught by terrible savages whose king wanted to kill him and eat him unless he could build a perfect sewing machine．When he tried to do so, Howe ran into the same problem as before．The thread kept getting caught around the needle．The king flew into the rage and ordered his soldiers to kill Howe．They came up towards him with their spears raised．But suddenly the inventor noticed something．There was a hole in the tip of each spear．The inventor awoke from the dream, realizing that he had just found the answer to the problem．Instead of trying to get the thread to run around the needle, he should make it run through a small hole in the center of the needle．This was the simple idea that finally made Howe design and build the first really practised sewing machine．

　　Elias Howes was not the only one in finding the answer to his problem in this way．

　　Thomas Edison, the inventor of the electric light, said his best ideas came into him in dreams．So did the great physicist Albert Einstein．Charlotte Bronte also drew on her dreams in writing Jane Eyre．

　　To know the value of dreams, you have to understand what happens when you are asleep．Even then, a part of your mind is still working．This unconscious(无意识的), but still active part understands your experiences and goes to work on the problems you have had during the day．It stores all sorts of information that you may have forgotten or never have really noticed．It is only when you fall asleep that this part of the brain can send messages to the part you use when you are awake．However, the unconscious part acts in a special way．It uses strange images which the conscious part may not understand at first．This is why dreams are sometimes called “secret messages to ourselves”．

1．According to the passage, Elias Howe was ________．

[　　]

A．the first person who solved problems in his sleep

B．much more hard-working than other inventors

C．the first person to design a sewing machine that really worked

D．the only person at the time who knew the value of dreams

2．The problem Howe was trying to solve was________．

[　　]

A．what kind of thread to use

B．how to design a needle which would not break

C．where to put the needle

D．how to prevent the thread from getting caught around the needle

3．Thomas Edison is spoken of because________．

[　　]

A．he also tried to invent a sewing machine

B．he got some of his ideas from dreams

C．he was one of Howe's best friends

D．he also had difficulty in falling asleep

4．Dreams are sometimes called “secret messages to ourselves”, because________．

[　　]

A．strange images are used to communicate ideas

B．images which have no meaning are used

C．we can never understand the real meaning

D．only specially trained people can understand them

People do not analyze every problem they meet. Sometimes they try to remember a solution from the last time they had a   21  problem. They often accept the opinion or ideas of other people. Other times they begin to act without   22 ；they try to find a solution by trial and error.   23  .，when all of these methods   24  ，the person with a problem has to start analyzing. There are six    25  in analyzing a problem.

   26  the person must recognize that there is a problem. For example, Sam's bicycle is broken, and he cannot ride it to class as he usually does. Sam must see that there is a problem with his bicycle.

Next the person must   27   the problem. Before Sam can repair his bicycle, he must know why it does not work. For example, he must determine the parts that are wrong.

Now the person must look for   28  that will make the problem clearer and lead to  possible solutions. For example, suppose Sam   29   that his bike does not work because there is some thing wrong with the brakes(刹车).   30  , he can look in his bicycle repair book and read about brakes,   31  his friends at the bike shop, or look at his brakes carefully.

After studying the problem, the person should have   32  suggestions for a possible solution. Take Sam as an example   33 ，his suggestions might be: tighten or loosen the brakes; buy new brakes and change the old ones.

In the end, one   34  seems to be the solution to the problem. Sometimes the __35__ idea comes quite   36  because the thinker suddenly sees something new or sees something in a   37   way. Sam, for example, suddenly sees there is a piece of chewing gum（口香糖）stuck to a brake. He   38   finds the solution to his problem ：he must___39___the brake.

Finally the solution is tested .Sam finds that his bicycle   40  perfectly. In short he has solved the problem.

Monarch Butterfly (金斑蝶) Profile

       Monarch butterflies are known for the unbelievable mass movement that brings millions of them to California and Mexico each winter. North American monarchs are the only butterflies that make such a massive journey-up to 3,000 miles (4,828 kilometers). The butterflies must begin this journey each fall ahead of cold weather, which will kill them if they delay too long.

       Monarch butterflies begin life as eggs and hatch as little worms that eat their eggshells and finally, eat the milky plants on which they were placed. When fat worms become juicy, colorful and hairy, they create a hard protective case around themselves as they enter the cocoon stage. They come out as beautifully colored, black-orange-and-white adults. The colorful pattern makes monarchs easy to identify, and the unique pattern warns their enemies that the insects are terribly tasting and poisonous.

       Butterflies that come out from cocoon in late summer and early fall are different from those that do so during the longer days and warmer weather of summer. These monarchs are born to fly, and know that they must prepare for their long journey because of the changing Weather. However, only monarchs born in late summer or early fall make the move, and they make only one found trip. By the time next year's winter moving begins, several summer generations wilt have stayed and died. It will be last year's settlers' great grand children that make the trip. Yet somehow these new generations know the way, and follow the same routes their ancestors took-sometimes even returning to the same tree.

       Many scientists are concerned about the eastern population of monarchs, which spend the summer east of the Rocky Mountains. This group is occurring in ever smaller numbers, and its survival now is threatened by a series of natural disasters in the Mexican winter grounds and by reduced milkweed plants in their summer home.

1．What will happen to the monarch butterflies if they don't leave in fall?

      A．They can't survive the very low temperature, in winter

      B．They can't keep their pattern colour in changeable weather

      C．They will be blown down by the strong wind in winter

      D．They will be separated from each other by the cold weather

2．Form the passage we can learn that Monarchs ____________.

      A．feed on their own eggs instead of milky plants

      B．experience three life stages before they can fly

      C．are difficult to be picked out from other insects

      D．are very delicious, though they are poisonous

3．Which of the following about Monarchs is TRUE?

      A．Monarchs seem to know their ancestor's hometown

      B．Only last year's settlers' grandchildren make the trip

      C．All the summer generations will have stayed and died

      D．Only monarchs born in early autumn make the move

4．The writer seems             about the present survival situation of Monarchs.

      A．confident            B．worried        C．disappointed       D．hopeful