閱讀理解。 |
Red Dwarf Red Dwarf stars (紅矮星) can range in size from a hundred times smaller than the sun, to only a couple of times smaller. Because of their small size these stars burn their fuel very slowly, which allows them to live a very long time. Some red dwarf stars will live trillions of years before they run out of fuel. Then why are red dwarf stars red? Beacuse red dwarf stars only burn a little bit of fuel at a time, they are not very hot compared to other stars. Think of a fire. The coolest part of the fire at the top of the flame glows red, the hotter part in the middle glows yellow, and the hottest part near the fuel glows blue. Stars work the same way. Their temperatures determine what color they will be. Thus we can determine how hot a star is just by looking at its color. Like the Sun, these medium(中等的) -sized stars are yellow because they have a medium temperature. Their higher temperature causes them to burn their fuel faster. This means they will not live as long, only about 10 billion years or so. Near the end of their lives, these medium-sized stars swell up becoming very large. When this happens to the Sun it will grow to engulf(吞 沒) even the Earth. Finally they shrink again, leaving behind most of their gas. This gas forms a beautiful cloud around the star called a Planetary Nebula(行星狀星云) . When will the Sun expand into a giant, and then shrink leaving behind a planetary nebula? Don't worry. The sun is only about 5 billion years old. It still has another 5 billion years before it will expand, and then turn into a planetary nebula. The Sun is so hot that when it dies, it will take a long time to cool off. The sun will die in about 5 billion years, but it will still glow for many billions of years after that. As it cools, it will be what is called a white dwarf star. Finally, after billions maybe even trillions of years, it will stop glowing, at that point it will be what we call a black dwarf star. There are still no black dwarf stars in the Universe. |
1. Why do the Red Dwarf stars burn their fuel very slowly? |
A. Because they are small. B. Because they don't move around. C. Because they are cool. D. Because they reflect light like the moon. |
2. Which of the following best expresses the main idea of Paragra-ph 2? |
A. How red dwarf stars work. B. Why red dwarf stars burn a little fuel. C. Why red dwarf stars are red. D. How temperature determines the color. |
3. Which of the following is closest in meaning to the underlined phrase" swell up"in Paragraph 3? |
A. Become smaller. B. Become larger. C. Keep the same. D. Grow high. |
4. The title on the underline before Paragraph 3 is probably |
A. The Sun B. Yellow Stars C. Planetary Nebula D. Star Temperature |
5. Which of the following websites may this passage be taken from? |
A. www. plant. com B. www. oceans. com C. www. inventor. com D. www. kidsastronomy. com |
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科目:高中英語 來源:設(shè)計(jì)必修一英語譯林 題型:050
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科目:高中英語 來源: 題型:閱讀理解
閱讀理解
Maybe ten-year-old Elizabeth put it best when she said to her father. “But Dad, you can't be healthy if you're dead.”
Dad , in a hurry to get home before dark so he could go for a run, had forgotten to wear his safety belt--a mistake 75% of the US population make every day. The big question is why.
There have been many myths about safety belts ever since their first appearance in cars some forty years ago. The following are three of the most common.
Myth( 神話)Number One: It's best to be “thrown clear” of a serious accident.
Truth: Sorry , but any accident serious enough to “throw you clear” is also going to be serious enough to give you a very bad landing. And chances are you'll have traveled through a windshield(擋風(fēng)玻璃)or door to do it. Studies show that chances of dying after a car accident are twenty-five times greater in cases where people are “thrown clear.”
Myth Number Two: Safety belts “trap” people in cars that are burning or sinking in water.
Truth: Sorry again. but studies show that people knocked unconscious(昏迷) due to not wearing safety belts have a greater chance of dying in these accidents. People wearing safety belts are usually protected to the point of having a clear head to free themselves from such dangerous situations, not to be trapped in them.
Myth Number Three: Safety belts aren't needed at speeds of less than 30 miles per hour
Truth: when two cars traveling at 30 mph hit each other. An unbelted driver would meet the windshield with a force equal to diving headfirst into the ground from a height of 10 meters.
Why did Elizabeth say to her father, “But. Dad, you can't be healthy if you're dead”?
A. He was driving at great speed.
B. He was running across the street.
C. He didn't have his safety belt on.
D. He didn't take his medicine on time.
The reason Father was in a hurry to get home was that he_____.
A. wasn't feeling very well
B. hated to drive in the dark
C. wanted to take some exercise
D. didn't want to be caught by the police
According to the text, to be “thrown clear” of a serious accident is very dangerous ,because you _____.
A. may be knocked down by other cars
B may get seriously hurt being thrown out of the car
C. may find it impossible to get away from the seat
D. may get caught in the car door
Some people prefer to drive without wearing a safety belt because they believe___.
A. the belt prevents them from escaping in an accident
B. they will be unable to think clearly in an accident
C. they will be caught when help comes
D. cars catch fire easily
What is the advice given in the text?
A.Never drive faster than 30 miles an hour.
B. Try your best to save yourself in a car accident.
C. Never forget to wear the safety belt while driving.
D. Drive slowly while you're not wearing a safety belt.
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科目:高中英語 來源:廣東省普寧市20092010學(xué)年高一上學(xué)期必修三水平測試試卷(英語) 題型:閱讀理解
Ⅲ 閱讀 (共兩節(jié),滿分40分)
第一節(jié) 閱讀理解(共15小題;每小題2分,滿分30分)
閱讀下列短文,從每題所給的A、B、C和D項(xiàng)中,選出最佳選項(xiàng),并在答題卡上將該項(xiàng)涂黑。
A person has to be sixteen to drive, seventeen to see certain movies, and eighteen to vote. People can get terrific discounts on all sorts of stuff-provided they’re over sixty-five. Everywhere we look there are age limits that define what people can and can’t do. But creativity has no boundaries, no limitations. Anyone can invent. And they do. Inventors are popping up at the youngest ages.
Sitting in the car waiting for her mom to return from shopping, Becky decided she might as well try to finish her math homework. But it was growing dark and getting hard to see the paper.
“I didn’t have a flashlight, and I didn’t want to open the car door because then the whole car would light up.” recalled Becky. “So I thought it would be neat to have my paper light up somehow, and that’s when the idea came to me.”
It isn’t every day that a ten-year-old invents a product eagerly sought by several businesses, but that’s exactly what Becky Schroeder did when she created a tool that enabled people to write in the dark. Her invention? The Glo-sheet.
That night Becky went home, trying to imagine different ways of making her paper glow in the dark. She remembered all sorts of glow-in-the-dark toys-like balls and Frisbees-and wondered how they were made. She was determined to find a solution. So they very next day, Beck’s dad took her on an outing to the hardware store. They returned with a pail (桶) of phosphorescent paint. She took the paint and stacks of paper into the darkest room in the house-the bathroom. There, she experimented.
“I’d turn on the light, turn it off, turn it on,” said Becky. “My parents remember me running out the room saying ‘It works, it works! I’m writing in the dark!’ ”
She used an acrylic board and coated it with a specific amount of phosphorescent paint. She took a complicated idea and made it work rather simply. When the coated clipboard is exposed to light, it glows. The glowing board then illuminates or lights up the paper that has been placed on top. Two years after her initial inspiration, in 1974, Becky became the youngest female ever to receive a U.S. patent.
She didn’t actively market her Glo-sheet. She didn’t need to. The New York Times wrote an article about an incredible invention-patented by a twelve-year-old, and the inquiries and orders streamed in.
1. From Paragraph 1 , we can draw a conclusion that _________.
A. it is illegal for one to drive under sixteen
B. people enjoy privileges when over sixty-five
C. one is never too old or too young to invent
D. people hate the limitations that define our behavior
2. What caused Becky to invent Glo-sheet?
A. She was trying to do homework when it got dark.
B. She was having trouble with math problems.
C. She was trying to earn some money.
D. She was working on a school project.
3. What is the meaning of the underlined words “phosphorescent paint” in paragraph 5?
A. paint that acts as a glue B. paint that covers a mark
C. paint that becomes hard D. paint that glows in the dark
4. What does it mean that Beck “didn’t actively market her Glo-sheet” according to paragraph 8?
A. She kept the original one for her own use.
B. Other people came to her for the Glo-sheet.
C. Becky’s father tried to sell the Glo-sheet.
D. She gave away patent to the government.
5. With which statement would Becky most likely agree?
A. Experience is needed to be a good inventor.
B. Only by inventing things can you know what people need.
C. Always try to sell patent rights to large companies.
D. You never know what you can do unless you try.
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科目:高中英語 來源:同步題 題型:閱讀理解
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