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You may have never heard of Lanthanum, Cerium or Neodymium, but these elements (元素) and others known as “rare earth” play a major role in modern technology. They can actually be found in many places on the earth, but not in quantities that can be mined. Only a few countries — China, America, India, Australia, Brazil and Malaysia have any that can be mined enough to be traded.
Even though some of these elements such as Cerium are as abundant as Copper, they are not found in concentrated amounts on the earth’s surface. They are often mixed together with other metals, which makes extraction (提取) of these elements an expensive and an environmentally messy process. It was due to this reason that the term “rare earth” was invented.
Rare earth metals are used widely in our life. Rechargeable car batteries, computers, iPhones, DVD players, computer monitors, televisions, lighting, lasers, glass polishing, and superconductors all use quantities of rare earth metals. Also, with the advancement in “green” technology like solar panels, these shiny materials are becoming more important than ever. An average electric car uses 10 pounds of Lanthanum for its rechargeable battery!
America has large deposits (存储量) of rare earths and has one of the first mines. It was opened in Southern California in 1940. The element “Europium” was the first metal to be separated in quantity for use in color televisions. However, in the 1980’s and 1990’s, as China started producing these elements in Inner Mongolia, the mines in America and elsewhere could not keep pace. The mine in Mountain Pass, California also failed environmental regulations and shut down in 2002.
Now, recognizing the importance of having more than one supplier of this important resource, other rare earth owning countries like India and Australia are either dusting off their rare earth mines or speeding up their production. It is believed that the debate over rare earths will become louder in the coming months and years.
What can we learn about rare earths?

A.They are actually as abundant as Copper.
B.They can be mined easily as other metals.
C.They can only be found in a few countries.
D.They are not really as rare as they are named.

Compared with China, America _____.

A.paid more attention to Europium
B.has larger deposits of rare earths
C.started producing rare earths earlier
D.has more rare earth mines

It can be inferred from the text that rare earths _____.

A.are now in great demand
B.can now be used in few fields
C.are harmful to the environment
D.will soon be replaced by other metals
科目 英语   题型 阅读理解   难度 中等
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Many animals recognize their food because they see it. So do humans. When you see an apple or a piece of chocolate you know that these are things you can eat. You can also use other senses when you choose your food. You may like it because it smells good or because it tastes good. You may dislike some types of food because they do not look, smell or taste very nice. Different animals use different senses to find and choose their food. A few animals depend on only one of their senses, while most animals use more than one sense.
Although there are many different types of food, some animals spend their lives eating only one type. The giant panda eats only one particular type of bamboo. Other animals eat only one type of food even when given the choice. A kind of white butterfly will stay on the leaves of a cabbage, even though there are plenty of other vegetables in the garden. However, most animals have a more varied diet. The bear eats fruits and fish. The fox eats small animals, birds and fruits. The diet of these animals will be different depending on the season.
Humans have a very varied diet. We often eat food because we like it and not because it is good for us. In countries such as France and Britain, people eat foods with too much sugar. This makes them overweight, which is bad for their health. Eating too much red meat and animal products, such as butter, can also be bad for the health. Choosing the right food, therefore, has become an area of study in modern life.
We can infer from the text that humans and animals ____.

A.depend on one sense in choosing food
B.are not satisfied with their food
C.choose food in similar ways
D.eat entirely different food

Which of the following eats only one type of food?

A.A white butterfly. B.A small bird.
C.The bear. D.The fox.

Certain animals change their choice of food when ____.

A.the season changes
B.the food color changes
C.they move to different places
D.they are attracted by different smells

We can learn from the last paragraph that ____.

A.food is chosen for a good reason
B.French and British food is good
C.some people have few choices of food
D.some people care little about healthy diet

What will most probably be talked about in the next paragraph?

A.Why choosing the right food is important.
B.How to choose the right food.
C.The right amount of food for a person.
D.Vegetables matter more than meat and sugar.

The 30-mile road that runs through the mountains of Willie Valley makes most drivers′ hands sweat. But Andersen, a 46-year-old father of four, wasn’t expecting any trouble on the road last New Year’s Eve, when he set off for a ski trip to the Bear Mountains with nine-year-old daughter Mia, four-old son Baylor, and nine-year-old neighbor Kenya. Andersen had driven through the Valley hundreds of times over the years.
The weather was fine. But the higher they drove, the more slippery the road became. Rounding a sharp U-turn, Andersen saw a heavy truck off the road and immediately hit his brakes. In a minute, the car was going at 25 miles per hour down the mountain before falling down from a ten-foot dam into the extremely cold Logan River.
The crash had broken a few windows, and within seconds, the car was filled with water. “It was frightening that we were going fast into deep water,” remembers Andersen, a soft-spoken manager.
Having lost all sense of direction, Andersen began to search the freezing water for the kids. Mia had been right next to him in the front seat; now, in the blackness, he couldn’t find her. “I thought, if I don’t get out, maybe none of us are going to get out.” Andersen got out of his seat belt, swam through a broken window, and, deeply and quickly, breathed air at the surface. That’s when he saw a group of men, about ten in all, appear at the top of the dam. One after another, they rushed down into the water. Helping onto safety all the three children, they began to shout at the father, “Who else is in the car?”
Andersen says respectfully, “It was like the sight of angels.”
What might be the main cause of the car accident?

A.The bad weather. B.The high dam.
C.The sudden brake. D.The heavy truck.

Andersen didn’t expect any trouble on the road because _____.

A.he was familiar with the road
B.he was good at driving
C.his hands didn’t have sweat
D.the weather was fine

What can be learned from the last paragraph?

A.Andersen lost consciousness in the water.
B.Strangers helped Andersen out of the car.
C.Andersen liked Mia most among the children.
D.Strangers teamed together to save three children.

The underlined sentence is to express Andersen’s feeling of being _____.

A.tired B.excited C.doubtful D.thankful

Which of the following can be the best title of the text?

A.Stay calm when in trouble
B.Drive rounding a U-turn
C.Miracle rescue from a river
D.Mystery of the Bear Mountains

When Mary Moore began her high school in 1951, her mother told her, “Be sure and take a typing course so when this show business thing doesn't work out, you'll have something to rely on.” Mary responded in typical teenage fashion. From that moment on, "the very last thing I ever thought about doing was taking a typing course," she recalls.
The show business thing worked out, of course. In her career, Mary won many awards. Only recently, when she began to write Growing Up Again, did she regret ignoring her mom, “I don't know how to use a computer,” she admits.
Unlike her 1995 autobiography(自传), After All, her second book is less about life as an award-winning actress and more about living with diabetes (糖尿病). All the money from the book is intended for the Juvenile Diabetes Research Foundation (JDRF), an organization she serves as international chairman. “I felt there was a need for a book like this,” she says. “I didn't want to lecture, but I wanted other diabetics to know that things get better when we're self-controlled and do our part in managing the disease.”
But she hasn't always practiced what she teaches. In her book, she describes that awful day, almost 40 years ago, when she received two pieces of life-changing news. First, she had lost the baby she was carrying, and second, tests showed that she had diabetes. In a childlike act, she left the hospital and treated herself to a box of doughnuts (甜甜圈). Years would pass before she realized she had to grow up ---again---and take control of her diabetes, not let it control her. Only then did she kick her three-pack-a-day cigarette habit, overcome her addiction to alcohol, and begin to follow a balanced diet.
Although her disease has affected her eyesight and forced her to the sidelines of the dance floor, she refuses to fall into self-pity. “Everybody on earth can ask, 'why me?' about something or other,” she insists. “It doesn't do any good. No one is immune (免疫的) to heartache, pain, and disappointments. Sometimes we can make things better by helping others. I've come to realize the importance of that as I've grown up this second time. I want to speak out and be as helpful as I can be.”
Why did Mary feel regretful?

A.She didn't achieve her ambition.
B.She didn't take care of her mother.
C.She didn't complete her high school.
D.She didn't follow her mother's advice.

We can know that before 1995, Mary__________.

A.had two books published
B.received many career awards
C.knew how to use a computer
D.supported the JDRF by writing

Mary's second book Growing Up Again is mainly about her__________ .

A.living with diabetes B.successful show business
C.service for an organization D.remembrance of her mother

When Mary received the life-changing news, she_____________ .

A.lost control of herself B.began a balanced diet
C.tried to get a treatment D.behaved in an adult way

What can we know from the last paragraph?

A.Mary feels pity for herself.
B.Mary has recovered from her disease.
C.Mary wants to help others as much as possible.
D.Mary determines to go back to the dance floor.

If a business wants to sell its products internationally, it had better do some market research first. This is a lesson that some large American corporations have learned the hard way.
What’s in the name?
Sometimes the problem is the name. When General Motors introduced its Chevy Nova into Latin America, it overlooked the fact that Nova in Spanish means “It doesn’t go”. Sure enough, the Chevy Nova never went anywhere in Latin America.
Translation problems
Sometimes it is the slogan that doesn’t work. No company knows this better than Pepsi-Cola, with its “Come alive with Pepsi!” campaign. The campaign was so successful in the United States , Pepsi translated its slogan literally for its international campaign. As it turned out , the translations weren’t quite right. Pepsi was begging Germans to “Come out of the grave(坟墓)” and telling the Chinese that “Pepsi brings your ancestors(老祖宗) back from the grave.”
A picture’s worth a thousand words
Other times, the problem involves packaging . A picture of a smiling baby has helped sell countless jars of Gerber baby food. When Gerber started selling baby food in Africa, they used the same packaging as in the US, with the smiling baby on the label. Later they learned that in African countries, the picture on the jar shows what the jar has in it, for many people there can’t read.
Twist of fate
Even the culture and religious factors and pure coincidence can be involved. Thorn McAn shoes have a Thorn McAn “signature” inside. To people in Bangladesh, which is a Muslim country, this signature looked like Arabic script for the word Allah. In that country, feet are considered unclean, and Muslims felt the company was offending God’s name by having people walk on it.
From the text we learned that _________.

A.Chevy Nova was brought in Latin America
B.General Motors did the best market research of all companies
C.Pepsi still sold well in China owing to the translation problems
D.the “Come alive with Pepsi” campaign worked well in the US

What was “Gerber’s problem”?

A.A translation problem B.Cultural factor
C.Religious factor D.The picture on the jar

For what reason were Thorn McAn shoes turned down in Bangladesh?

A.They are not designed attractively
B.Their advertisements are not persuasive
C.A signature looking like the word Allah was in the shoes
D.Problem for Thorn McAn was the company’s name

What does the text mainly tell us?

A.Lessons from some large corporations.
B.How to make use of advertisements
C.The importance of market research
D.The importance of packaging

Researchers found that walking around with a forced smile and fake (假的) happiness simply leads to people feeling unhappier. So, putting a brave face on your sadness could be harmful. The research also found that women suffered more than men when pretending to be happy.
Dr. Brent Scott, who led the study, said employers should take note because forcing workers to smile when dealing with the public can result in bad outcomes. He said, “Smiling for the sake of smiling can lead to emotional tiredness, and that’s bad for the organization.” He also said the research showed customer-service workers who had “fake smiles” throughout the day fell into a bad mood and didn’t want to work, so their productivity dropped.
The study is one of the first of its kind to examine emotional expressions over a period of time and compare the different effects on men and women. Dr. Scott’s team examined the effects of “surface acting”, or fake smiling, compared to “deep acting”, or making people smile by thinking of pleasant memories.
Dr. Scott said, “Women were harmed more by surface acting, meaning their moods worsened even more than men’s. However, they were helped more by deep acting, which means their moods improved more by thinking of pleasant memories. ”
According to Dr. Scott, women tend to suffer more when pretending to be happy because they are expected to be more emotionally expressive than men. Therefore, forcing a smile while feeling down is more likely to go against their normal behavior and cause more harmful feelings.
Although deep acting can improve moods a little in the short term, Dr. Scott says, it’s not a long-term solution to feeling unhappy. “There have been some suggestions that if you do this over a long period you start to feel unreal. You’re trying to develop positive emotions, but at the end of the day you may not feel like yourself any more.”
According to the passage, Dr. Scott’s study ______.

A.is supported by some big employers in the USA
B.is meaningful as there haven’t been many similar ones
C.examined more women than men for a long time
D.aimed to make the employees more productive

Women suffer more from fake happiness mainly because ______.

A.they usually become shy in public places
B.they are supposed to be more emotionally expressive
C.they are often treated in a terrible way
D.they like thinking of pleasant memories

It is implied in the passage that deep acting _____.

A.doesn’t have any effect on men
B.cannot improve our moods in any case
C.harms our feelings in the long run
D.pleases people by feeling like another person

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