A black hole is created when a large star burns out．Like our sun，stars are unbelievably hot furnaces（熔爐） 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 solid that a teaspoon of matter from it weighs billion of pounds．
The more the star shrinks（收縮），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（吞噬） 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（擠壓）．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（處理） in the sky!
（1）When the star begins to dieBB．
A．there is no fuel left in it
B．a(chǎn) huge explosion will happen
C．its outer layer goes into space first
D．it doesn't give off light any longer
（2）Which of the following doesn't help produce a black hole？AA
A．The dying star shines very brightly．
B．The light can't go out of the star．
C．The star becomes smaller and smaller
D．The gravity inside the star is very strong．
（3）The black holeDD．
A．continues becoming smaller and smaller all the time
B．goes into another universe and becomes a white hole
C．will appear at another place at a different time
D．can pull in everything we know of in the world
（4）What's the best title for this passage？BB
A．A New Scientific Discovery：Black Holes
B．What Are Black Holes？
C．What Are Black Holes？How Do Black Holes Come Into Being？
D．Travel Through A Black Hole
【考點(diǎn)】社會．
【答案】B；A；D；B
【解答】
【點(diǎn)評】
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發(fā)布：2024/5/27 14:0:0組卷：1引用：2難度：0.4
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1．A mother was asked to attend his son's school's first teacher-parent meeting．To the little boy's disappointment，she said she（1）
go．This was the first time（2）his classmates and teacher（3）his mother and he felt（4）of her appearance．Although she was a beautiful woman，there was a severe scar （疤痕） that（5）nearly the entire right side of her face．The boy never wanted to（6）why or how she got the scar．
The people at the meeting were（7）by the kindness and natural beauty of his mother（8）the scar，but the little boy was still embarrassed （尷尬） and（9）himself from everyone．However，he could（10）a conversation between his mother and his teacher．
The teacher asked（11）， "How did you get the scar on your face？"
The mother replied， "（12）my son was a baby，he was in a room that caught fire．Everyone was（13）afraid to go in because the fire was（14），so I went in．As I was running toward his bed，I saw a long piece of wood coming down and I placed myself over him trying to protect him．I was knocked（15）but fortunately，a fireman came in and saved both of us．" She（16）the burned side of her face．" This scar will be（17），but to this day，I have never（18）what I did．"
Hearing this ，the little boy came out running toward his mother with tears in his eyes．He held her in his arms and felt a great（19）of the sacrifice （犧牲） that his mother had made for him．He held her hand（20）for the rest of the day．（1） A．may B．would C．could D．will （2） A．that B．which C．whether D．when （3） A．had noticed B．had greeted C．had accepted D．had met （4） A．sick B．a(chǎn)shamed（羞恥） C．a(chǎn)fraid D．tired （5） A．included B．passed C．covered D．shaded （6） A．talk about B．think about C．care about D．hear about （7） A．impressed B．surprised C．excited D．comforted （8） A．in sight of B．by means of C．by way of D．In spite of（盡管） （9） A．hid B．protected C．separated D．escaped （10） A．understand B．remind C．hear D．learn （11） A．carefully B．seriously C．nervously D．a(chǎn)nxiously （12） A．As B．When C．Since D．While （13） A．so B．much C．quite D．too （14） A．out of control B．under control C．in control D．over control （15） A．helpless B．hopeless C．senseless D．useless （16） A．pointed B．showed C．wiped D．touched （17） A．ugly B．lasting C．serious D．frightening （18） A．forgot B．recognized C．considered D．regretted （19） A．honor B．sense C．happiness D．pride （20） A．quietly B．slightly C．tightly D．Suddenly 發(fā)布：2025/1/1 18:0:1組卷：8引用：2難度：0.2 -
2．A few weeks ago，I sat with a California farmer named Dave Ribeiro．I asked him what he wished to know about farmers．He smiled and said， "That we walk among you．We look like you and talk like you．We have advanced degrees and hobbies，just like you．"
Take Dave for example：He's a young man with a music degree．And if you walked past him on the street，you'd never think， "There goes a farmer．"
Is someone like Dave who you picture when you think of a farmer？Probably not．I think that most people would picture a man in his overalls（工作服）．I can tell you，that does not represent Dave or any of the many other farmers I have gotten to know．
Not only do we have to throw out our previous impression of farmers，but farming as a whole doesn't look much like it used to either．We recently sent a team out to see what modern farming looks like，and they found farmers to be completely different from our usual ideas about them and also came across them in some unexpected places．
In a parking lot in a neighborhood of Brooklyn，they met a new crop of young farmers who were trying to bring fresh greens closer to eaters in the city by growing them in high-tech indoor vertical（垂直的） farms．In a Florida field under the fight path of an airport，they discovered farmers with university degrees growing plants that might someday fuel our cars．And in a modern farm in California，they observed how farmers were using technology to take the best possible care of their animals．
These farmers all spend their days in very different ways-none of them looks like the previous farmer we have in our mind-but they're all working on new ways to feed our planet．Not only do we need to change our idea of what farming looks like，but we also need to change our view of where solutions can come from．Feeding all of us is going to take all of us working together．
（1）How does Dave describe today's farmers？
A．They often walk on the street．
B．They are leading a very busy life．
C．They are similar to ordinary people．
D．They have little time to make friends．
（2）How does the author think most people see farmers？
A．They usually wear overalls．
B．They have interesting hobbies．
C．They are skilled at growing crops．
D．They know modern farming practices．
（3）What was the purpose of the team？
A．To deepen connections among farmers．
B．To study different technologies in farming．
C．To find the new developments of modern farming．
D．To encourage farmers to use new farming method．
（4）What do the farmers mentioned in Paragraph 5 have in common？
A．They all work in the city．
B．They all use high technology．
C．They all do hard physical work．
D．They all work with universities．發(fā)布：2025/1/1 18:0:1組卷：26引用：5難度：0.7 -
3．Your child is unique，but what all children have in common is natural curiosity and an ability to learn they are born with.Our brains are active all the time，and a baby's brain is the busiest of all.Research has shown that babies begin to understand language about twice as fast as they actually speak it.By showing children other languages at an early age，you are giving them the opportunity to make use of their natural ability to hear and recognize between the sounds of other languages，and their ability to make sense of what they are hearing.
Communication is something that children do to help them achieve something else，and they are unaware of the large amount of learning taking place.They take everything in through their senses，making connections between what they hear，see，smell，taste and touch.As long as we provide the right conditions，their learning and development will take place in a natural way.
In your child's early years，the emotional environment is just as important as the physical environment.Children learn when they feel safe，happy，valued and listened to.This is central to any learning experience in a child's early years，including learning an additional language.Your child has a trial-and-error approach to its development，and making mistakes is a valuable part of the learning process.When children learn an additional language at an early age，they get the benefits of experimenting with that language as a natural part of their development.Their progress isn't prevented by a fear of getting it wrong，and very young children are simply working their way towards getting it right.
The long-term benefits of learning another language go beyond being able to communicate with others.Studies suggest that children learning an additional language tend to score better on standardized tests because learning languages develops listening，observation，problem-solving and critical （批判性的） thinking skills.These are skills that are of life-long benefit，both personally and professionally.Encouraging in children a love of language at an early age prepares them well for school and for life.
（1）What do we know about Children according to Paragraph 1？
A．Children are busy playing.
B．Children are born to speak.
C．Children are good at speaking native language.
D．Children have a better ability to learn other languages.
（2）While learning a language，children.
A．speak to themselves
B．need to have language classes
C．make use of their different senses
D．notice how much they have learned
（3）Children learn when they.
A．a(chǎn)re in bad emotion
B．do not make mistakes
C．learn from their mistakes
D．a(chǎn)re taught by their teachers
（4）In fact learning another language helps children to.
A．take more tests
B．have a good time
C．encourage themselves
D．develop life-long skills發(fā)布：2025/1/1 17:30:2組卷：4引用：3難度：0.5
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