Around 200 million years ago, the earth was 18 degrees warmer than it is now. That might be a bit hot for humans, but it was just right for the giant dinosaurs that wandered about the earth during the Mesozoic (中生代的) era. A new study found that planteating dinosaurs may have contributed to the warming of the earthby releasing significant amounts of methane (甲烷).
The study, published in science journal Current Biology, focused on sauropods, longnecked herbivores (食草动物) that munched (用力咀嚼) on the top of trees. They were the largest of the dinosaurs; food broke down in their stomachs for long periods of time. The researchers estimate that a sauropoda released 2,675 liters of methane per day—adding up to a large amount of the greenhouse gas being pumped from dinosaur's gut into the atmosphere.
Plant eaters naturally release methane as part of their digestive process. The larger the animal, the more methane it produces. Methane, a greenhouse gas, traps heat and remains in the atmosphere for approximately 915 years, which warms the atmosphere.
Today, some animals, such as cattle, goats and sheep, produce large amounts of methane as a byproduct to their food digestion. Methane is also released from human—influenced sources such as landfill, agricultural activities, coal mining and other industrial practices—which all contribute to today's climate change, according to the Environmental Protection Agency.
The researchers estimate that earth's sauropods would have produced about 520 million tons of methane per year—similar to the total amount of methane produced today by natural and manmade sources. However, the researchers warn that their numbers are estimates based on multiple assumptions about the digestive systems and populations of dinosaurs.
The author of the study David Wilkinson says the emission of methane from dinosaurs would have been just one of the causes of warm climate during the Mesozoic era. Other causes include gases produced from volcanoes, swamps, shallow seas and so on. Still, Wilkinson says,“ The amount of methane from dinosaurs is large enough to have a measurable effect.”Scientists think dinosaurs may have led to the global warming because ________.
A.they ate everything they found |
B.they usually had a good appetite |
C.they released a lot of methane |
D.there were too many dinosaurs on earth |
What do we know about dinosaurs from Paragraph 2?
A.Sauropods fed on plants. |
B.Sauropods were of medium size. |
C.Dinosaurs used to live on trees. |
D.Dinosaurs digested food quickly. |
Which of the following activities doesn't produce methane?
A.Coal is dug out by machine. |
B.Trees and flowers are planted. |
C.Goats digest grass under the tree. |
D.Food is being processed in the factory. |
How does the author make his writing reliable?
A.By listing some facts. |
B.By making predictions. |
C.By citing figures. |
D.By using mind pictures. |
David Wilkinson seems to believe that ________.
A.methane had little effects on the earth |
B.many other factors contributed to warm climate |
C.other causes for warm climate were worth considering |
D.dinosaurs were mainly to blame for global warming |
Every school has an ugly girl. In my primary school, it was me.
From first grade through fourth, I had to wear heavy orthopedic(整形外科的)shoes because of my weak ankles. I sounded like overweight elephant wearing bricks whenever I took a single step.
“Hey, Bigfoot!”
“Geez, you’re going to start an earthquake!”
Then in sixth grade I had to start wear glasses. Mom asked for the least expensive ones and that made me look like a fool.
“Four eyes!”
“Couldn’t you cover up more of your faces? Why stop at the eyes?”
In Seventh, I started competing on the city swim team, thinking that if I got a killer body, nobody would notice my face. Wrong again. I loved being fast and winning ribbons now and then, but now I had red, wet eyes from the chlorine(氯) in the pool. I also did not develop a killer body.
I changed my strategy at Eighth grade, the last year of middle school. I offered my help to anyone who needs. I worked for other girls, so they could hang out with their friends. My new program began to work. People who would never have acknowledged my existence before were suddenly seeking me out.
I’d been feeling pretty good until one day I went to Christine’s house to help her fill envelopes. Going into each envelope was invitation to Christine’s birthday party; it was a big event at a fancy hotel. Complete with dinner. She asked me to help her address these envelopes. There was no envelope for me.
My heart was broken. I tried to escape from all the eyes. High school had to be better, right? Yes and no. Now that I’m here, I know there are still lots of shallow people judging you on what you’re wearing or how cool your hair is , but there are also kids who talk to you because they liked your answers or just as you’re kind, honest, and a good friend.
I still do kind things because I like the feeling I get when I am helping people. I, with my friends, went to Children’s hospital, playing games and reading to the sick kids.
I still had wet red and not a smart look, but you cannot tell me I am not beautiful. Every time I visit hospital, five-year-old Terry grasps my hand, “Morri, you are so nice. I want to grow up to be just like you.”Why was Morri laughed at by her classmates when she was in primary school?
A.She had weak ankles and eyesight. |
B.Her glasses couldn’t cover up her face. |
C.She couldn’t get along well with them. |
D.She looked like an overweight elephant. |
Which of the following is the real reason for Morri competing on the city swim team?
A.To win more ribbons. |
B.To shift others’ attention from her face. |
C.To develop a killer body. |
D.To have red wet eyes. |
From what Morri experienced in the last year of middle school, we can learn that __________.
A.her classmates thought highly of her |
B.she was popular among her classmates |
C.she was often cheated by her classmates |
D.her classmates just made use of her |
The passage is intended to encourage people to __________.
A.address as many as invitation envelopes as possible |
B.take more sport activities including swimming |
C.take others’ comments into careful consideration |
D.take positive attitude towards disadvantages in life |
A scientist turns out to be able to see the future by offering each of some four-year-olds a piece of candy and watching how he or she deals with it. Some children reach eagerly for the treat they see. Some last a few minutes before they give in. But others are determined to wait until the last moment.
By the time the children reach high school, something remarkable has happened. A survey found that those who as four-year-olds had enough self-control to hold out generally grew up to be more popular, adventurous, confident and dependable. The children who gave in to temptation(诱惑)early on were more likely to be lonely, easily frustrated and inflexible.
Actually, the ability to delay reward is a sign of emotional intelligence which doesn’t show up on an IQ test.
The hardware of the brain and the software of the mind have long been scientists’ concerns. But brain theory can’t explain what we wonder about most, like the question why some people remain upbeat in the face of troubles that would sink a less resistant soul.
Here comes the theory of Daniel Goleman, writer of Emotional Intelligence: when it comes to predicting people’s success, brain ability as measured by IQ may actually matter less than the qualities of mind once thought of as “character”.
EQ is not the opposite(相反) of IQ. What researchers have been trying to understand is how they work together; how one’s ability to handle stress, for instance, affects the ability to concentrate and put intelligence to use. Among the ingredients(要素) for success, researchers now generally agree that IQ makes up about 20%; the rest depends on everything from social class to luck.
While many researchers in this relatively new field are glad to see emotional issues finally taken seriously, some few fear EQ invites misuse. The experiment with the four-year-olds makes it clear that .
A.the age of 4 is a proper time for scientific experiment |
B.emotional intelligence won’t show up until adolescence |
C.the ability of self-control plays a role in personal success |
D.candy can be used to measure a person’s emotional intelligence |
The underlined word “upbeat” in Paragraph 4 probably means .
A.kind | B.floating | C.excited | D.cheerful |
Why does the author mention the experiment at the beginning of the text?
A.To amuse both the children and readers. |
B.To prove the scientist’s wisdom. |
C.To introduce the topic of the text. |
D.To show us how to do an IQ test. |
What is most likely to be written in the paragraph that follows?
A.Information about famous people with high EQ. |
B.Examples showing the opposite voice about EQ. |
C.Some reasons why EQ is a relatively new field. |
D.Strong demand for basic emotional education. |
Chinese New Year for Kids
‘Chinese New Year for Kids’ is a full color paperback book with beautiful Chinese illustrations (插图). This is a hands-on workbook for parents and teachers, written for children from ages 3 to 12 years old, for use in the classroom or at home. Music, physical movement, art, and food all add to the atmosphere of taking an imaginary trip to China during the Chinese New Year.
Author:Cindy Roberts |
Date: 2002-10-01 |
List Price: $ 9.95 |
Price: $ 8.95 Buy it On Amazon.com |
The Polar Express
One couldn’t select a more delightful and exciting premise (前提) for a children’s book than the tale of a young boy lying awake on Christmas Eve only to have Santa Claus sweep by and take him on a trip with other children to the North Pole. And one couldn’t ask for a more talented artist and writer to tell the story than Chris Van Allsburg.
Author:Chris Van Allsburg |
Date: 1985-10-28 |
List Price: $18.95 |
Price: $ 12.89 Buy it On Amazon.com |
The Secret of Saying Thanks
Perhaps you’d like to know a secret, one of the happiest ones of all. You’ll discover it all on your own, maybe when you least expect. If you’ve not yet discovered the secret of saying thanks, it’s waiting for you. The secret can be found in the sunrise that offers promises for the day ahead, or in the gentle shade of a tree sheltering you from the hot rays of the sun.
Author:Douglas Wood |
Date: 2005-9-27 |
List Price: $ 16.95 |
Price: $ 11.53 Buy it On Amazon.com |
The Runaway Pumpkin
When Buck, Billy and their little sister Lily spy the biggest pumpkin they’ve ever seen, they can’t resist (抵制). Buck and Billy try to roll the pumpkin down the hill to show everyone, but it’s too big! Before they know it, it’s rolling out of control down the hillside. It knocks over Grandpa Baxter and makes him think of pumpkin soup. And when Poppa Baxter finally stops, all he can think of is pumpkin bread.
Author:Kevin Lewis |
Date: 2003-09-01 |
List Price: $ 15.95 |
Price: $ 6.38 Buy it On Amazon.com |
We can infer from the passage that Chinese New Year for Kids ________.
A.is very popular with readers all over the world |
B.is helpful to foreigners to travel to China. |
C.helps readers to learn about Chinese culture |
D.introduces a lot of outdoor activities. |
If you buy a copy of The Runaway Pumpkin on Amazon. Com, you can save ________.
A.30% | B.60% | C.40% | D.70% |
The author wrote the passage mainly to ________.
A.offer us some advice on shopping |
B.tell us some interesting stories |
C.introduce some children’s books |
D.compare some books’ information |
It’s not easy being a teenager nor is it easy being the parent of a teenager.You can make your child feel angry, hurt or misunderstood by what you say without realizing it yourself.It is important to give your child the space he needs to grow while gently letting him know that you’ll still be there for him when he needs you.
Expect a lot from your child,just not everything.Except for health and safety problems,such as drug use or careless driving,consider everything else open to discussion.If your child is unwilling to discuss something,don’t insist he tell you what’s on his mind.The more you insist, the more likely that he’ll clam up.Instead,let him try to solve things by himself. At the same time,remind him that you’re always there for him if he seeks advice or help.Show respect for your teenager’s privacy(隐私).Never read his mail or listen in on personal conversations.
Teach your teenager that the family phone is for the whole family. If your child talks on the family’s telephone for too long,tell him he can talk for l5 minutes,but then he must stay off the phone for at least all equal period of time.This not only frees up the line so that other family members can make and receive calls,but teaches your teenager moderation(节制).Or if you are open to the idea,allow your teenager his own phone that he pays for with his own pocket money or a part-time job.The main purpose of the text is to tell parents.
A.how to get along with a teenager |
B.how to respect a teenager |
C.how to help a teenager grow up |
D.how to understand a teenager |
What does the phrase "clam up" in Paragraph 2 probably mean?
A.become excited | B.show respect |
C.refuse to talk | D.seek help |
The last paragraph is about how to teach a teenager ________.
A.to use the phone in a proper way |
B.to pay for his own telephone |
C.to share the phone with friends |
D.to answer the phone quickly |
What should parents do in raising a teenager according to the text?
A.Not allow him to learn driving or take drugs. |
B.Give him advice only when necessary. |
C.Let him have his own telephone. |
D.Not talk about personal things with him. |
Although the U.S. is so big and its people have so many different ethnic (racial) backgrounds, it is in some ways less varied than Europe. The English language is used almost everywhere in its American form. The American way of speaking has developed independently of England and is on the whole closer to what can be heard in Ireland.
American instance of uniformity(一致性) is in habits and ways of living. From Boston to Los Angeles it is as far as from France to Central Asia, and from east to west there are five time zones; but everywhere people get up and go to bed at about the same time, eat the same kind of food, buy in the same kind of shops, work and rest at the same times of the day and have the same pattern of holidays. In most of the things that matter there is less difference between rich people and ordinary people, or between town and country, than in any single European nation.
Although the United States covers so much land and the land produces far more food than the present population needs, its people are by now almost entirely an urban society. Less than a tenth of the people are engaged in agriculture, and most of the rest live in or around towns, large and small. Here the traditional picture is changing; most Americans do not live in small towns any more. Half the population now live in some thirty metropolitan(大城市的) areas.
The fact that the United states has always been a single economic unit has contributed to uniformity. Modern industry favors large organizations, and it is no accident that the world’s biggest commercial firms are American. The people can choose between the products of competing manufacturers, but the products are all much alike. In describing the uniformity in the U.S. the author does not mention that
A.the American people get up and go to work at the same time. |
B.the American people spend their holidays in the same pattern. |
C.the American people buy and eat the same kind of food. |
D.the American people have more or less the same income. |
What can we learn from the passage about the U.S. agriculture?
A.The American farmers need more land than before. |
B.More and more Americans are interested in farming. |
C.It is quite modernized. |
D.It is now going backward. |
What is the feature of the U.S. modern industry according to the last paragraph?
A.The production scale and the organizational scale are very big. |
B.It is a single economic unit that manufactures the same kind of products. |
C.There are more and more competing manufacturers. |
D.There are always a variety of products to choose from. |
What does “most of the things” in the second paragraph refer to?
A.food, clothing and houses. |
B.Cars, computers and TV sets. |
C.Their wealth and income. |
D.Land, housing and bank savings. |