题目
题型：不详难度：来源：
Does the crab actually keep time, or does its skin simply answer to the sun’s rays, changing colour according to the amount of light strikes it? To find out, biologists kept crabs in a dark room for two months. Even without daylight, the crab’s skin colour continued to change exactly on time.
This characteristic probably developed gradually in answer to the daily rising and setting of the sun, to help protect the crab from sunlight and enemies. After millions of years it has become completely regulated (受控制) inside the living body of the crab.
The biologists noticed that once each day th
e colour of the fiddler crab is especially dark, and that each day this happens fifty minutes later than on the day before. Fro
m this they discovered that each crab follows not only the rhythm of the sun but also that of the tides (潮水). The crab’s period of greatest darkening is exactly the time of low tide on the beach where it was caught!小题1:The fiddler crab is like a clock because it changes colour ______.
A in a regular 24—hour rhythm B. in answer to the sun’s rays
C.
at low tide D. every fifty minutes小题2:The crab’s changing colour ______.
| A．tells the crab what time it is | B．protects the crab from the sunlight and enemies |
| C．keeps the crab warm | D．is of no real use |
| A．did not change colour | B．changed colour more quickly |
| C．changed colour more slowly | D．changed colour on the same timetable |
| A．in the process of evolution (进化) | B．over millions of years |
| C．by the work of biologists | D．both A and B |
| A．The Sun and the Tides | B．Discoveries in Biology |
| C．A scientific Study | D．A Living Clock |
答案
小题1:A
小题1:B
小题1:D
小题1:D
小题1:D
解析
核心考点
试题【The fiddler crab (蟹) is a living clock. It shows the time of day by the colour o】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
When you put up your hands in class, the teacher
knows you want to say something or ask questions. You shake your head, and people know you are saying "No". You nod and people know you are saying "Yes". Other things can also carry messages. For example, a sign at the bus helps you to know which bus to take. A sign on the door helps you where to go in or out. Have you ever thought that there are a lot of signs around you and that you receive messages from them all the time? People can communicate in many other ways. An artist can use his drawing to tell beautiful mountains, about the blue sea and many other things. Books are written to tell about all the wonderful things in the world and also about people and their ideas. Books, magazines, TV, radio and films all help us communicate with others. They can help us to know what is going on in the world and what other people are thinking about.小题1:People communicate ________.
| A．with words only | B．in many different ways |
| C．in letters and drawings | D．with smiles, tears and hands |
| A．questions | B．examples | C．tears and smiles | D．messages |
| A．books and magazines | B．TV and films | C．newspapers | D．radio |
| A．understand the world and other people better around us. |
| B．teach each other to speak, write, read and draw. |
| C．know what other people are thinking about |
| D．learn about mountains,blue sea and other things. |
| A．Signs Carry Messages | B．The important Communication |
| C．Words, Signs and Drawing | D．Ways of Communication. |
小题3: A yellow room makes most people feel more cheerful and more relaxed than a dark green one; and a red dress brings warmth and cheer to the saddest winter day. 小题4: A black bridge over the Thames River, near London, used to be the scene of more suicides(自***) than any other bridge in the area-until it was repainted green. The number of suicide attempts immediately fell sharply. Perhaps it would have fallen even more if the bridge had been done in pink or baby blue.
小题5: It is an established fact that factory workers work better, harder, and have fewer accidents when their machines are painted orange rather than black or gray.
| A．On the other hand, black is depressing. |
| B．They tell us, among other facts, that we do not choose our favorite color as grow up—we are born with our preference. |
| C．The rooms are pained in different colors as you like. |
| D．If you do, you must be an optimist, a leader, an active person who enjoys life, people and excitement. |
F. Life is like a picture or a poem, full of different colors.
G. Colors do influence our moods-there is no doubt about it.
ll that everyone __36__. Many people—adults included—do not have a good __37__ of saving for the long run.I have been _38__ to learn this lesson early because I have had a grass cutting business since I was 10 years old. 39__ the money I make I spend about 10 percent and save the other 90.
Making sure you save and don"t spend too much is a good way to __40__ wealth. I have put my earnings in a bank. Many teens I know spend all the money they earn so it never has a chance to _41__. Young people should __42_ that their teenage years are a great time to begin saving.
If you have a job at high school, you _43__ have fun with some of the money. But you should also save some __44__ it will grow. Then you can begin planning for your future. When you spend money, you not only lose that money, __45__ lose the interest you could have earned by saving it.
After high school, college is __46__， with expenses such as food and rent. If you can __47__ a good percentage of the money you earn as a teen, going to college and buying a house will be much easier. If you are in your thirties without any savings, you will alwa
ys have to __48__.Later in life it can be hard to start saving _49__ general cost of living is more expensive and you may only have enough to pay your _50__. If you want to buy a house and have a family, you need money to start with, which __51__ saving.
Many say money cannot make you happy, and this is true. But money can help you to lead a __52__ life.
Saving early will mean you will have to work for fewer years when you are older. It will also __53___ you to spend time doing the things that you want to do.__54__， it will mean you can live the way you want to without 55__.
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In the past nine years, I’ve seen her twice, and each time we’ve been polite but distant. And that troubles me because we were once that close to each other. I’d like nothing more than to go back nine years, and continue our friendship. But how? How do you reconnect with friends you’ve lost throughout the years?
Linking to your past
The desire to reconnect with lost friend isn’t unusual. Why? Because friends link us to the past. “Friends from years ago are custodians(监护人) of our past,” says Sandy Sheehy, author of Connecting” The Enduring Power of Female Friendship.
Although you can’t share information about your past with friends you’ve met recently, you don’t have a shared history with them. So you wind up only telling them about your past, rather than sharing it with them.
But many people never try to reconnect. Women especially have trouble taking the first step. Shyness or fear that the other person doesn’t want to reconnect often stops many women. And that shouldn’t be. Your friends probably want to be in touch with you as much as you want to be in touch with them.
Searching for friends
Fortunately, finding lost friends isn’t as difficult as it once was, thanks to tools like the Internet. Our experts offer these suggestions for locating contact information:
Search Internet sites designed to locate people like classmates.com and switchboard.com.
Contact your high school or college alumni（校友）office to request current address information.
Surf online yellow pages. Check current phone records from your friend’s hometown.
Network with other friends who might have known your friend.
Get in touch with any of her relatives(亲戚), if you know where they live. If you know where she works, find the company’s web site and search the directory of personnel.
小题1:What ‘s the subject discussed in the passage?
| A．How to make new friends. | B．How to rediscover friendships. |
| C．How to develop healthy friendships | D．How to keep in touch with friends. |
| A．many years ago old friends kept something for us |
| B．in the past old friends took care of us |
| C．old friends are part of our life history |
| D．old friends know what wrong things we did in the past |
| A．Lack of money | B．Shortage of time |
C．Regret  and shame | D．Fear and shyness |
| A．By asking other friends of the information on your lost friends. |
| B．By searching your friends’ telephone number in the net. |
| C．By asking the local post office about your friends’ new address. |
| D．By putting an ad in your friends’ local town. |
Well, I had nothing against feeling great and if Alex could jog every day, anyone could. So I took up jogging seriously and gave it a good two months of my life, and not a day
more. Based on my experience, jogging is the most overvalued form of exe
rcise around, and judging from the number of the people who left our neighborhood jogging army. I"m not alone in my opinion.First of all, jogging is very hard on the body. Your legs and feet a real pounding (沉重的脚步) running down a road for two or three miles. I developed foot, leg, and back problems. Then I read about a nationally famous jogger who died of a heart attack while jogging, and I had something else to worry about. Jogging doesn"t kill hundreds of people, but if you have any physical weaknesses, jogging will surely bring them out, as they did with me.
Secondly, I got no enjoyment out of jogging. Putting one foot in front of the other for forty-five minutes isn"t my idea of fun. Jogging is also a lonely pastime. Some joggers say, “I love being out there with just my thoughts.” Well, my thoughts began to bore me, and most of them were on how much my legs hurt.
And how could I enjoy something that brought me pain? And that wasn"t just
the first week: it was practically every day for two months. I never got past the pain level, and pain isn"t fun. What a cruel way to do it! So many other exercises, including walking, lead to almost the same results painlessly, so why jog?I don"t jog any more, and I don"t think I ever will. I"m walking two miles three times a week at a fast pace, and that feels good. I bicycle to work when the weather is good. I"m getting exercise, and I"m enjoying it at the same time. I could never say the same for jogging, and I"ve found a lot of better ways to stay in shape.
小题1:From the first paragraph, we learn that in the writer"s neighborhood ________.
| A．jogging became very popular |
| B．many people were encouraged to jog |
| C．Alex organized an army of joggers |
| D．jogging provided a chance to get together |
| A．heart attacks | B．Back problems |
| C．hundreds of people | D．physical weaknesses |
| A．jogging can help people keep fit |
| B．many physical problems result from jogging |
| C．not everyone enjoys jogging |
| D．jogging makes people feel great |
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