题目列表(包括答案和解析)
A: For years some people have been saying that railways are dead. They say, “Trains are slow, and they lose money. Motorcars and planes have made them unnecessary.”
B: 1. . I think in these days of expensive oil, railways have become highly competitive with motorcars and planes.
A: Right. If you want to carry people or goods from place to place, they are much cheaper than planes.
B: 2. . A plane goes in a straight line, and so does a railway.
A: What is more, it takes you from the heart of a city into the heart of another. 3. . Nor does it hold you up as a car does in heavy traffic.
B: 4. . Modern railway lines give you a smooth, untroubled journey. We’ve just entered the age of super-fast trains, traveling at 160 miles an hour and more.
A:5.
A. So railways will have very bright future, I dare say.
B. It doesn’t leave you as a plane does, miles and miles from the city center.
C. Far from being dead, railways are developing very quickly.
D. Trains are really slower than planes.
E. And they have much in common with planes.
F. But it is far from the truth.
G. Trains are really more comfortable than planes.
A black hole is created when a large star burns out. Like our sun, stars are unbelievably hot furnaces (熔炉) that burn their own matter as fuel. When most of the fuel is used up, the star begins to die.
The death of a star is not a quiet event. First there is a huge explosion. As its outer layer is blasted off into space, the dying star shines as brightly as a billion suns.
After the explosion gravity pulls in what’s left of the star. As the outside of the star sinks toward the center, the star gets smaller and smaller. The material the star is made of becomes tightly packed together. A star is so dense that a teaspoon of matter from it weighs billion of pounds.
The more the star shrinks, the stronger the gravity inside it becomes. Soon the star is very tiny, and the gravity pulling it in is unbelievably strong. In fact, the gravity is so strong that it even pulls light into the star! Since all the light is pulled in, none can go out. The star becomes black when there is no light. Then a black hole is born!
That’s what we know about black holes. What we don’t know is this: What happens inside a black hole after the star has been squeezed into a tiny ball? Does it keep getting smaller and smaller forever? Such a possibility is hard to imagine.
But if the black hole doesn’t keep shrinking, what happens to it? Some scientists think black holes are like doorways to another world. They say that as the star disappears from our universe, it goes into another universe. In other words a black hole in our universe could turn into a “white hole” in a different universe. As the black hole swallows light, the white hole shines brightly—somewhere else. But where? A different place, perhaps, or a different time — many years in the past or future.
Could you travel through a black hole? Right now, no. Nothing we know of could go into a black hole without being crushed. So far the time being, black hole must remain a mystery.
Black holes are a mystery—but that hasn’t stopped scientists from dreaming about them. One scientist suggested that in the future we might make use of the power of black holes. They would supply all of Earth’s energy needs, with plenty to spare. Another scientist wondered if a black hole could some day be used to swallow earthly waste—a sort of huge waste disposal(处理) in the sky!
When the star begins to die ______.
A. there is no fuel left in it B. its outer layer goes into space first
C. a huge explosion will happen D. it doesn’t give off light any longer
Which of the following doesn’t help produce a black hole?
A. The gravity inside the star is very strong. B. The light can’t go out of the star.
C. The star becomes smaller and smaller D. The dying star shines very brightly.
The black hole ______.
A. continues becoming smaller and smaller all the time
B. goes into another universe and becomes a white hole
C. can pull in everything we know of in the world
D. will appear at another place at a different time
What’s the best title for this passage?
A. A New Scientific Discovery: Black Holes
B. How Do Black Holes Come Into Being?
C. What Are Black Holes?
D. Travel Through A Black Hole
For years we have been told that encouraging a child’s self-respect is important to his or her success in life. But child experts are now learning that too much praise can lead to the opposite effect. Praise-sholic kids who expect it at every turn may become teens who seek to same kind of approval from friends when asked if they want to go in the backseat of the car.
The implication(含义) of saying “You are the prettiest girl in class,” or talking about the goals she succeed but not her overall effort, is that you love her only when she looks the best, scores she highest, achieves the most. And this carries over to the classroom.
Social psychologist Carrol Dweck, PhD, tested the effects of overpraise on 400 fifth graders while she was at Columbia University. She found that kids praised for “trying hard” did better on tests and were more likely to take on difficult assignments than those praised for being “smart”.
“Praising attributes(品质) or abilities makes a false promise that success will come to you because you have that quality, and it devalues effort, so children are afraid to take on challenges, ” says Dweck, now at Stanford University, “They figure they’s better quit while they’re ahead.”
The underlined words “Praise-sholic kids” refers to kids who are ______.
A. tired of being praised B. worthy of being praised
C. very proud of being praised D. extremely fond of being praised
The author quoted(引用) Dr. Dweck’s words in the last paragraph in order to make the article
_____.
A. better-known B. better-organized C. more percussive D. more interesting
We can infer from the passage that _____.
A. praise for efforts should be more encouraged
B. praise for results works better than praise for efforts
C. praising a child’s achievements benefits his or her success in life
D. praising a child’s abilities encourage him or her to take on challenges
A couple of years ago,before a trip to China,Nicole Davis and her US women’s volleyball teammates were warned about the prominence (显著、突出) of coach “Jenny” Lang Ping in her native country.
“I was pushed over by Chinese journalists while I was just trying to put my luggage on the bus,”said Davis.
Known as the “Iron Hammer” for her punishing spikes(扣球),Lang made it possible for China to dominate in the sport in the early 1980s.She was a key player on China’s 1984 Olympic gold medal winning team.
When the US team arrived for the Olympics,Lang,48,who is from Beijing,had to take a different route to avoid a crowd of reporters and fans.
Then came the greatest moment to Lang:While the US team was playing in a packed gym,at least 8,000 Chinese fans unfurled an American flag.
“That really says it all,” Davis said.“They look at her as an icon(偶像).I’m sure it’s hard for them to see her coaching another country,but they love her so dearly that her success is their success.”
The loyalty of the Chinese fans was tested on Friday,when China lost a match to the US.
“It’s a pity that China lost the match,but I’m still glad that Lang Ping’s team won,since she is the pride of China’s volleyball,” said Liu Chengli,a spectator.“We also cheered for
Lang’s victory.”
Lang said she just tried to stay professional when the two teams meet.“It doesn’t matter if we play China or any other team.It’s the same.” Lang said.
Davis said she and her teammates could not have imagined the passion for volleyball among Chinese because the sport was lack of popularity in the US. The reception from Chinese fans has touched the US players,said US volleyball player Lindsey Berg.
“It’s such an honor to be here and play for our coach here in China,”she said.“The amount of support that the Chinese give to her and us has been tremendous.The whole event has been unbelievable.”
What’s the passage mainly about?
A.Staying professional. B.Cheering for the Iron Hammer.
C.A match between China and the US. D.Lang Ping’s career as a coach.
Lang Ping avoided meeting the reporters and fans probably because she ________.
A.was afraid to be questioned about her strategy
B.didn’t want to be paid much attention to
C.disliked to be with her fans
D.didn’t want to disturb public order
What does the underlined word “unfurled” exactly mean?
A.destroyed completely B.tore into pieces
C.spread out to the wind D.rolled up
What does Lang Ping mean by saying “It doesn’t matter if we play China or any other team.”?
A.American Volleyball Team will beat any team.
B.Chinese Volleyball Team is the same as other teams.
C.She just tried to stay professional.
D.The results of each match will be the same.
What impressed the US team players most?
A.The tolerance of Chinese people.
B.The popularity of volleyball in China.
C.Lang Ping’s coaching skills.
D.The loyalty for volleyball of the Chinese.
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