It is natural that children are curious (好奇的) about the world around them. For example, they want to know how their hearts beat. They want to know why the ocean water tastes salty.
　　As children grow up, they become curious about different kinds of things. When they are babies, they are interested in the parts of their bodies and in the smiles of their mothers. They become interested in the physical world around them: the plants, the animals, the sky. Later, they become interested in the things that people have made: wheels, bicycles, cars. And when they are adults, their curiosity continues. Sometimes this curiosity leads to a career (生涯、职业) in science.
　　Scientists spend their lives trying to find out about the world. Those who work with the earth sciences study the earth, the oceans, and the skies. Other scientists who study living things work with the biological sciences. A third group of scientists study the physical sciences, e. g. physics, chemistry .
　　These scientists have already discovered a lot about our world. For example, they tell us why your heart beats fast when you run. They say that when you are quiet, your heart normally beats sixty-five or seventy-five times a minute. Your heart is a pump (泵) that pumps blood to all parts of the body. The blood carries oxygen and nutrition. When you run, your muscles work very hard and use the nutrition that the blood carries to them. The muscles need oxygen, too . So your brain sends a signal to the heart. The signal means that the muscles need more nutrition and oxygen. Then the heart beats fast and sends blood quickly to the muscles. It may beat 90 to 140 times a minute.
　　Of course, scientists cannot answer all of our questions. If we ask, “Why does the ocean water taste salty” scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks. Rain falls into cracks. The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask , “What happens to the salt in the ocean? The ocean does not get saltier every year.” Scientists are not sure about the answer to this question.
　　We know a lot about our world, but there are still many answers that we do not have, and we are curious.
【小题1】According to the passage, which of the following statements is true?

B
It is natural that children are curious (好奇的) about the world around them. For example, they want to know how their hearts beat. They want to know why the ocean water tastes salty.
　As children grow up, they become curious about different kinds of things. When they are babies, they are interested in the parts of their bodies and in the smiles of their mothers. They become interested in the physical world around them: the plants, the animals, the sky. Later, they become interested in the things that people have made: wheels, bicycles, cars. And when they are adults, their curiosity continues. Sometimes this curiosity leads to a career (生涯、职业) in science.
　Scientists spend their lives trying to find out about the world．Those who work with the earth sciences study the earth, the oceans, and the sky. Other scientists who study living things work with the biological sciences. A third group of scientists study the physical sciences, e. g. physics, chemistry .
　These scientists have already discovered a lot about our world．For example, they tell us why your heart beats fast when you run. They say that when you are quiet, your heart normally beats sixty-five or seventy-five times a minute. Your heart is a pump (泵) that pumps blood to all parts of the body. The blood carries oxygen and nutrition. When you run, your muscles work very hard and use the nutrition that the blood carries to them. The muscles need oxygen, too . So your brain sends a signal to the heart. The signal means that the muscles need more nutrition and oxygen. Then the heart beats fast and sends blood quickly to the muscles. It may beat 90 to 140 times a minute.
　Of course, scientists cannot answer all of our questions. If we ask, “Why does the ocean water taste salty” scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks. Rain falls into cracks. The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask , “What happens to the salt in the ocean? The ocean does not get saltier every year.” Scientists are not sure about the answer to this question.
　We know a lot about our world, but there are still many answers that we do not have, and we are curious.
55．According to the passage, which of the following statements is true?
　  A．People are curious in the same way.
　  B．People in different countries are interested in different things.
　  C．Men and women are curious about different things.
　  D．People of different ages are interested in different things
56．Scientists who work with the biological sciences study____.
A．the earth , the oceans and the sky   B．man-made things
C．plants and animals   D．ocean water
57．When you run, your muscles need ____.
A．more nutrition and oxygen  B．more signals   C．more salt  D．water
58．People are always curious because ____.
A．they cannot explain many things    B．they know nothing about the world
C．they know little about the world    D．they want to be scientists 

　 As we know, Human beings each have unique brains. The brain is of the greatest importance to the body. It is the boss of the body．Your eyes，ears，nose，and skin tell your brain what is going on around you．Other parts of your body tell your brain what is going on inside of you．Your brain takes in the signals．It tells your body what to do with them．When you touch fire，your skin tells your brain that your finger is too hot．Your brain tells you to move your finger．All these happen very fast．Your brain also controls your breathing，blinking，and heartbeat．It controls your feelings and thoughts too．

　　Humans have the most developed brain of all animals．Yet it is not the largest brain．The human brain weighs three pounds．The brain of an elephant weighs 11 pounds．So the largest brain is not always the best brain．In people，a larger brain does not mean a clever person．

1.What is the main idea of this passage?

2.What happens after the brain takes in the signals from the body?

3.What does “the boss of the body” mean?

4.Which brain is the most developed?

5.What are the things that the human brain does?

　　A．Takes in signals．　　　　　　　B．Controls breathing．

　　C．Controls feelings and thoughts．　D．A，B and C．

　　The purpose of a letter of application is to help you to “sell” yourself. It should state　 36　 the job you want, and should tell what your abilities are and what you have　 37　 . It should be simple, human, personal and brief without　 38　 out any necessary fact.

　　In writing a letter of application, keep in　 39　 that the things a possible employer is most　

 40　 to want to know about are your qualifications（条件）, your achievements and your aims.The opening paragraph is perhaps the most important part.　41　 the first few sentences fail to　 42　 the reader’s attention, the rest of the letter may not be　 43　 at all. Try to key your opening remarks to the needs or interests of the employer not　 44　 your own need or desires. For example, instead of beginning with “I saw your　 45　 in today's paper. ”you might say“I have made a careful　 46　 of your advertising during the past six months” or “I have made a survey in my neighbourhood to find out how many housewives　 47　 your product and why they like it.”

　　Try to　 48　 generalities. Be clear about the kind of job for which you are now　 49　. College graduates looking for their first positions often ask“ What can I　 50　 in a letter? Employers want experience, which, naturally, no　 51　 has. ”The answer is that everything you have ever done is　 52　.

　　It is important to write a good strong closing for your letter.　53　 a specific request for an interview or give the possible employer something definite to do or expect. An excellent　54　 is to enclose（内附）a stamped, self - addressed envelope with your letter. That makes it　 55　 for a possible employer to get in touch with you.

　　36．A. clearly B. carefully C. obviously D. easily

　　37．A. found B. done C. known D. heard

　　38．A. sending B. taking C. leaving D. picking

　　39．A. brain B. sight C. order D. mind

　　40．A. probable B. possible C. likely D. able

　　41．A. While B. Although C. As D. If

　　42．A. pay B. win C. show D. fix

　　43．A. kept B. continued C. written D. read

　　44．A. to B. for C. into D. from

　　45．A. advertisement B. report

　　　　C. article  D. introduciton 

　　46．A. watch B. search C. study D. discussion

　　47．A. change B. make C. sell D. use．

　　48．A. avoid B. remember C. protect D. gain

　　49．A. losing B. applying C. preparing D. fitting

　　50．A. offer B. supply C. mean D. provide

　　51．A. worker B. beginner C. owner D. manager

　　52．A. success B. development C. practice D. experience

　　53．A. Make B. Ask C. State D. Get

　　54．A. result B. decision C. promise D. idea

　　55．A. happier B. easier C. cheaper D. safer