题目列表(包括答案和解析)
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
A gentle breeze blew through Jennifer's hair. The golden red sun was setting. She was on the beach, looking up at the fiery (火红的) ball. She was amazed by its color, deep red in the middle, softly fading into yellow. She could hear nothing but the waves and the seagulls flying up above in the sky.
The atmosphere relaxed her. After all she had been through, this was what she needed. "It's getting late," she thought, "I must go home. My parents will be wondering where I am."
She wondered how her parents would react, when she got home after the three days she was missing. She kept on walking, directing herself where she spent every summer holiday. The road was deserted. She walked slowly and silently. Just in a few hundred meters she would have been safe in her house.
It was really getting dark now. The sun had set a few minutes before and it was getting cold too. She wished she had her favorite sweater on: it kept her really warm. She imagined having it with her. This thought disappeared when she finally saw her front door. It seemed different. Nobody had taken care of the outside garden for a few days. She was shocked: her father was usually so strict about keeping everything clean and tidy, and now... It all seemed deserted. She couldn't understand what was going on.
She entered the house. First, she went into the kitchen where she saw a note written by her father. It said: "Dear Ellen, there is some coffee ready. I went looking." Ellen was her mother but-where was she? On the right side of the hallway was her parents' room. She went in. Then she saw her. Her mother, lying on the bed, was sleeping. Her face looked so tired, as if she hadn't slept for days. She was really pale. Jennifer would have wanted to wake her up but she looked too tired. So Jennifer just fell asleep beside her. When Jennifer woke up, something was different-she wasn't in her mother's room and she wasn't wearing the old clothes she ran away in. She was in her cozy bed in her pajamas.
It felt so good being back home. Suddenly she heard a voice, "Are you feeling better now, dear? You know you got us very, very scared."
Three days later Jennifer came back home .
A. at sunrise B. at sunset C. at night D. at midday
What does the underlined phrase "This thought" most probably mean?
A. The idea of going back home.
B. Her anxiety about her parents.
C. The feeling of being warm in her favorite sweater.
D. The feeling of getting back home safely.
Her father didn't take care of the garden because .
A. he was busy looking for her
B. he had to look after his wife
C. he was not strict with his job
D. he no longer enjoyed working in the garden
What can we infer from this passage?
A. In fact Jennifer's mother had been sick for days.
B. As Jennifer walked towards home, she became increasingly scared.
C. When she found the garden deserted, she realized she was wrong.
D. Having experienced a lot outside, Jennifer felt home was safest for her.
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
A week ago, I had the great pleasure of reading an e-book, When Money Talks, Listen! By Rich Ezzo.It took only about an hour to read.
When I first received a copy, I thought it was a Get Rich Quick type of publication.Nothing is wrong with Get Rich Quick, but my mind just doesn’t chase after dreams of wealth.I think that if God ever wants me to be rich, he knows where to find my purse.
When I began reading When Money Talks, Listen!, I was overjoyed to find that Rich Ezzo isn’t money hungry either.He, too, is hungry far more important than money.
Since I love this e-book so much, why wait a week to write the review? Simple.I wanted to see if the effect it had on me was a keeper.After reading the last word of the e-book, I totally agreed with the subtitle which promised to forever change the way we thought about money.I had so many thoughts running around my mind that I had to install(安装) a stoplight to stop some while others made their way into the picture, then I yielded(让路) them as a few ones arrived in town.I had a mental traffic jam, which only goes to show how slow the traffic usually is.
It has been a week and the effect is the same.I truly do look at money differently and have even done a few things differently this week.This is an e-book you’ll want to read, I promise.I often recommend books to my daughter, and this is one that I didn’t just “suggest”---I left it open at the bottom of the computer and told each one, “Read it, you’ll love it.”
I would never point someone in a direction I wouldn’t go myself.I urge you to visit the author’s website, Myster Money, and to download the e-book.You won’t regret it.
The author wrote this passage to _________
A.strongly recommend an e-book.
B.show the author's attitude to money.
C.introduce the general idea of an e-book.
D.point out Rich Ezzo isn't money hungry.
According to the passage, a Get Rich Quick type of publication ______.
A.is what the author really cares for
B.deals with how to make money
C.is also an e-book written by Rich Ezzo
D.is more popular than e-books
The author didn't write the review as soon as he finished reading the book because________.
A.he was too excited to write anything
B.he was not sure whether he did well
C.he had to wait for Rich Ezzo's permission
D.he wondered if the book would have long influence on him
By saying the underlined sentence in Paragraph 4, the author probably __________.
A.shows that the book brought him many new thoughts
B.shows how bad the traffic is in town
C.describes the difficulty in understanding the book
D.explains it's hard to change one's attitude to money
Which of the following is supported by the passage?
A.The author had known Rich Ezzo before.
B.The author hasn't dreamed of getting rich immediately.
C.The author always prefers e-books to paper books.
D.The author likes Get Rich Quick-type of publications.
A few years ago, when I was still in high school, I met a wonderful and warm teacher. At that time in my life, there were many changes to adjust to, apart from the usual teenage troubles. My parents had divorced, so my elder brother and I had chosen to stay with my dad. Due to the fact that he was keeping the house, we didn’t have to move.
During this time, my teacher took a special interest in me. Being my English teacher, she encouraged my mind to travel to creativity I had long given up. She brought me out of the shell I built.
She became my mother, my older sister, my friend and my teacher. The one thing she couldn’t do though was to make me more girly as growing up with only my dad and brother made me a real tomboy.
Sometimes, I would be really immature(不成熟的), especially if she was scoring me less than others on purpose. She knew I could do better than what I was handing in and so pushed me to extend further than limits.
When I finished school and then after college I was about to leave my hometowns she gifted me a watch that every second, with my pulse, should remind me of the one person who will forever wait and love me without reservation.
Time has passed and our friendship is distant, but in my heart, soul and mind, she is the closest I ever got.
The writer and her elder brother chose to live with their father simply because _________.
A. their mother was expecting to have another baby
B. they didn’t have to move out of their house
C. they hated their mother remarried
D. they had a closer relationship with their father
How did the writer get along with her studies before she met her English teacher?
A. She was hopeless and had given up her studies.
B. She was getting along well with her studies.
C. She had some trouble with her studies.
D. She lacked interest in creativity.
The writer behaved herself like a boy because ________.
A. she needed the love of mother
B. she wanted to learn from her father and brother
C. she lived with only men all the time
D. her English teacher didn’t care about her
What was the writer’s attitude to the watch given by the teacher?
A. She considered it to be very useful.
B. She valued it very much.
C. She kept it very well.
D. She wanted to do something later in return for it.
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