题目列表(包括答案和解析)
GUATEMALA CITY(Reuters)---- A fish that lives in mangrove swamps(红树沼泽)across the Americas can live out of water for months at a time, similar to how animals adapted(适应)to land millions of years ago, a new study shows.
The Mangrove Rivulus, a type of small killifish, lives in small pools of water in a certain type of empty nut or even old beer cans in the mangrove swamps of Belize, the United States and Brazil. When their living place dries up, they live on the land in logs(圆木), said Scott Taylor, a researcher at the Brevard Endangered Lands Program in Florida .
The fish, whose scientific name is Rivulus marmoratus, can grow as large as three inches. They group together in logs and breathe air through their skin until they can find water again.
The new scientific discovery came after a trip to Belize.
“We kicked over a log and the fish just came crowding out,” Taylor told Reuters in neighboring Guatemala by telephone. He said he will make his study on the fish known to the public in an American magazine early next year.
In lab tests, Taylor said he found the fish can live up to 66 days out of water without eating.
Some other fish can live out of water for a short period of time. The walking catfish found in Southeast Asia can stay on land for hours at a time, while lungfish found in Australia, Africa and South America can live out of water, but only in an inactive state. But no other known fish can be out of water as long as the Mangrove Rivulus and remain active, according to Patricia Wright, a biologist at Canada’s University of Guelph.
Further studies of the fish may tell how animals changed over time.
“These animals live in conditions similar to those that existed millions of years ago, when animals began making the transition(过渡)form water onto land, ” Wright said.
【小题1】The Mangrove Rivulus is a type of fish that ________.
A.likes eating nuts |
B.prefers living in dry places |
C.is the longest living fish on earth |
D.can stay alive for two months out of water |
A.Patricia Wright. |
B.Researchers in Guatemala. |
C.Scientists from Belize. |
D.Scott Taylor. |
A.breathe through its skin |
B.move freely on dry land |
C.remain alive out of water |
D.be as active on land as in water |
A.It was made quite by accident. |
B.It was based on a lab test of sea life. |
C.It was supported by an American magazine. |
D.It was helped by Patricia Wright. |
As a boy, Charles Robert Darwin collected anything that caught his interest: insects, coins and interesting stones. He was not very clever, but Darwin was good at doing the things that interested him.
His father was a doctor, so Darwin was sent to Edinburgh to study medicine, and was planned to follow a medical career. But Charles found the lectures boring. Then his father sent him to Cambridge University to study to be a priest. While at Cambridge, Darwin’s interest in zoology and geography grew. Later he got a letter from Robert FitzRoy who was planning to make a voyage around the world on a ship, the Beagle. He wanted a naturalist to join the ship, and Darwin was recommended(推荐). That voyage was the start of Darwin’s great life.
As the Beagle sailed around the world, Darwin began to wonder how life had developed on earth. He began to observe everything. After he was home, he set to work, getting his collection in order. His first great work The Zoology of the Beagle was well received, but he was slow to make public his ideas on the origin of life.
Later Darwin and Wallace, another naturalist who had the same opinions as Darwin, produced a paper together. Darwin’s great book, On the Origin of Species by Means of Natural Selection (《物种起源》) appeared. It attracted a storm. People thought that Darwin was saying they were descended from monkeys. What a shameful idea! Although most scientists agreed that Darwin was right, the Church was still so strong that Darwin never received any honors for his work.
Afterwards, he published another great work, The Descent of Man. His health grew worse, but he still worked. “When I have to give up observation, I shall die,” he said. He was still working on 17, April, 1882. He was dead two days later.
1.Which of the following would be the best title for the passage?
A. Charles Darwin’s ideas
B. Charles Darwin’s works
C. Father of modern biology: Charles Darwin
D. The greatest scientist: Charles Darwin
2.Darwin’s father sent him to Edinburgh to _____.
A. make him like natural history
B. make him become a doctor
C. let him change his hobbies
D. have him give up his collection
3.According to the passage, Charles Darwin’s whole life was changed by _____.
A. his study at Cambridge University
B. his collection of coins
C. the naturalists at Cambridge
D. the voyage of the Beagle
4.We can learn from the passage that _____.
A. Darwin announced his ideas on the origin of life as soon as he finished his voyage
B. Wallace agreed with Darwin’s opinions and wrote The Descent of Man with him
C. Darwin wrote two great books and a paper during his lifetime
D. churchmen were strongly against Darwin’s ideas at that time
Many children first learn the value of money by receiving an allowance. The purpose is to let children learn from experience at an age when financial mistakes are not very costly.
The amount of money that parents give to their children to spend as they wish differs from family to family. Timing is another consideration. Some children get a weekly allowance. Others get a monthly allowance.
In any case, parents should make clear what, if anything, the child is expected to pay for with the money. At first, young children may spend all of their allowance soon after they receive it. If they do this, they will learn the hard way that spending must be done within a budget. Parents are usually advised not to offer more money until the next allowance.
The object is to show young people that a budget demands choices between spending and saving. Older children may be responsible enough to save money for larger costs, like clothing or electronics. Many people who have written on the subject of allowances say it is not a good idea to pay your child for work around the home. These jobs are a normal part of family life.
Paying children to do extra work around the house, however, can be useful. It can even provide an understanding of how a business works.
Allowances give children a chance to experience the three things they can do with money. They can share it in the form of gifts or giving to a good cause. They can spend it by buying things they want. Or they can save it.
Saving helps children understand that costly goals require sacrifice: you have to cut costs and plan for the future. Requiring children to save part of their allowance can also open the door to future saving and investing. Many banks offer services to help children and teenagers learn about personal finance. A savings account is an excellent way to learn about the power of compound interest.
Compounding works by paying interest on interest. So, for example, one dollar invested at two percent interest for two years will earn two cents in the first year. The second year, the money will earn two percent of one dollar and two cents, and so on. That may not seem like a lot. But over time it adds up.
77.For children who receive allowances, they’d better not ________.
A. waste money to buy gifts for their parents or friends
B. buy their favorite clothing or electronics for themselves
C. save money like their parents or other adults
D. ask for the next allowance before the decided date.
78.Many parents give children an allowance regularly to ______.
A. meet children’s basic need for life
B. give control over their children
C. see whether they have financial mistakes
D. help children learn how to manage money
79.If children are required to save their allowance, they ______.
A. can experience three things related to money
B. can understand the relation between goals and sacrifice
C. will do more work around the house
D. help themselves found the basis for their future life
80. What is the best title for the passage?
A. Be Generous to Pay Your Children
B. Be Wise to Avoid Financial Mistakes
C. Saving Allowances Does Good to Children
D. Allowances Help Children Learn about Money
Decisions, decisions! Our lives are full of them, from the small ones to the life-changing. The right to choose is central to everyone. Yet sometimes we make bad decisions that leave us unhappy or full of regret. Can science help?
Most of us know little about the mental processes that lie behind our decisions. Luckily, what psychologists(心理学家)are finding may help us all make better choices. Here are some of their amazing discoveries to help you make up your mind.
Consider your emotions. You might think that emotions are the enemy of decision making, but in fact they're a part of it. Whenever you make up your mind, your brain’s emotional center is active. University of Southern California scientist, Antonio Damasio, has studied people with damage to only the emotional parts of their brains, and found that they were unable to make basic choices about what to wear or eat. Damasio thinks this may be because our brains store emotional memories of past choices, which we use to help the present decision making.
However, making choices under the influence of an emotion can greatly affect the result. Take anger, for example. A study by Nitika Garg of the University of Mississippi and other scientists found the angry shoppers were more likely to choose the first thing they were offered rather than considering other choices. It seems anger can lead us to make quick decisions without much thinking.
All emotions affect our thinking and motivation(动机), so it may be best to avoid making important decisions under their influence. Yet strangely there’s one emotion that seems to help us make good choices. The American researchers found that sad people took time to consider the various choices on offer, and ended up making the best choices. In fact many studies show that people who feel unhappy have the most reasonable view of the world.
【小题1】According to the text, what may help us make better decisions?
A.To think about happy times. |
B.To make many decisions at a time. |
C.To stop feeling regretful about the past. |
D.To learn about the process of decision-making. |
A.emotions are the enemy of decision making |
B.our brain has nothing to do with decision making |
C.people with physical damage find it hard to make up their minds |
D.our emotional memories of past choices can affect present decisions |
A.They often forget their past choices. |
B.They make decisions without much thinking. |
C.They tend to save time when shopping. |
D.They are too angry to bargain. |
A.Emotions are a part of decision making. |
B.Sad people always make worst choices. |
C.No emotion seems to help us make good choices. |
D.Only sad feelings affect our thinking and motivation. |
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该行缺一个词:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。
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注意:原行没有错误的不要改。
Last Sunday I am walking to the Greet Lake Park when 【小题1】________
I met foreign visitor who seemed to be lost. I tried to help 【小题2】_____
him, but I found we had difficulty in understand each other 【小题3】______
because of my poorly English . Just at that moment , 【小题4】______
a tall young lady came to our help. He spoke very good English. 【小题5】_______
With her help, the foreigner finally found the way but 【小题6】____
I learned some English as well. After he left, the foreigner 【小题7】____
thanked to us for our kindness. I was very excited that day. 【小题8】______
This experience have made me realize that English is really 【小题9】_____
useful and worth learning .I will work harder at it. 【小题10】______
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