Some people will say that you can plate.t value on anything We may know the price of milk We can also find out the value of the most expensive building in the world.Do you think it is possible to put a price on the Earth or other planets.
You probably think this is impossible Scientist Greg Laughlin thought differently.In March 2009，NASA sent the Kepler telescope into space to explore the Milky Way galaxy and to find Earth sized planets orbiting other stars.As there are billions of stats within the Milky Way，it could mean there were several thousand planets to discover.How could scientists decide which ones to study further and which ones to take no notice of？
Professor Laughlin used information received from the Kepler telescope to create a formula（公式）that puts a price on planets the age and size of each planet，its temperature，and the energy it created were considered.Older planets were given a higher value.The most important consideration was whether or not it may be possible for life to live on the planet.
By using his formula，Professor Laughlin found that planet Earth was the most important.He gave it a value of five quadrillion（千的五次冪）dollars.Mars was given a value of US ﹩ 16，500 and Venus was valued at zero.That is because it's impossible to support life on Venus because it is too close to the Sun.The professor said that an＞ planet that had a value of more than US ﹩ 100 million was worth studying further，
By November 2018，about 1，200 planets in total had been looked at.Most of them were worthless because of their unsatisfactory conditions.So should you run to the bank and borrow US S 16，500 so you can buy Mars？Maybe not today.You should just enjoy the five quadrillion dollar planet you already live on - and learn how to look after it.
（1）What purpose does the first paragraph serve？ BB
A．To describe the prices of different things.
B．To bring up the topic of values of planets.
C．To introduce a scientific question.
D．To show a research result.
（2）What part of Laughlin's formula carries the most value？ DD
A．A planet's temperature.
B．A planet's age and size.
C．The amount of energy a planet creates.
D．The possibility for life to live on a planet.
（3）What does the underlined word "That" in paragraph 4 refer to？ AA
A．Venus was valueless.
B．Venus is too close to the Sun.
C．Mars was much cheaper than Earth.
D．A.planet was usually valued at over US ﹩100 million.
（4）What does the writer expect people to do in the last paragraph？ BB
A．To study space science.
B．To protect and love Earth.
C．To save money to travel in space.
D．To support scientific organizations.
【答案】B；D；A；B
【解答】
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發(fā)布：2024/4/20 14:35:0組卷：1引用：1難度：0.5
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1．For some people，the warmest memories from childhood come from being read a great story．（1）
It develops children's language skills and increases their ability to succeed in school and，later，work．
A new report by the American Academy of Pediatrics says reading aloud is so important that parents should start as soon as their children are born and continue to read aloud even after their children can read by themselves．They say parents should also point to and talk about pictures in books for infants（嬰幼兒）．（2）
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（5）Of all the six to 17-year-olds in the Scholastic study，more than 90%said their favorite books are the ones they chose for themselves．
A．The Scholastic report also suggests permitting children to choose their own books．
B．Scholastic also identifies some ways to develop a love of reading in a child．
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F．Another way to develop a reading habit in children is to read to them．
G．But reading to children does more than create warm memories．發(fā)布：2025/1/1 13:30:1組卷：14引用：7難度：0.7 -
2．Paying ﹩25，000 to get your pet cloned might sound attractive，if you have the money and can't imagine life without your pet.
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The decision to clone your pet has to take place while they're still alive.You need to sign up with the company and take your pet to the vet so they can harvest some cells.Then，for between ﹩1-2000，the company will store the cells.Even if you decide to stop，there's no refund for the storage.If you decide to have your pet cloned，you'll pay a much larger deposit to perform the cell transfer and implant the cells into a host animal.
What's most important to consumers is the product.Your clone is a twin of your former pet，but it won't necessarily look or act like the original.They may have different colors and you don't get your money back.Even the companies admitted in New York Times "You can clone the look of a dog，but you can't clone the soul."
（1）Why did the author mention Dolly the sheep？
A．To ensure the safety of cloning.
B．To show that it is easy to clone sheep.
C．To prove the technology has a long history.
D．To tell readers the method used to clone their pets.
（2）What can we know about cloning a pet？
A．Your pet can be brought back to life.
B．The charge of pet cloning is ﹩1-2000.
C．Your new pet will have a parent when cloned.
D．The company will refund you if you give up halfway.
（3）What do the companies' words in the last paragraph mean？
A．Cloning is a moral issue.
B．The future of cloning is unclear.
C．The technology of cloning is not perfect.
D．Yon won't get the exact copy of the former one.
（4）Where is the text most likely from？
A．A travel guide.
B．A newspaper.
C．A science fiction.
D．A textbook.發(fā)布：2025/1/1 16:0:1組卷：21引用：4難度：0.5 -
3．Chinese students always complain that they're under great pressure and don't get enough sleep.But they may be surprised to learn that they're much luckier than their peers（同齡人）in South Korea and Japan，according to a recently published report，conducted by Shanghai Academy of Social Sciences on the physical and mental health of senior high school students in the three Asian countries.
According to the study among nearly 6，000 high school students in the three countries，Chinese students are the tallest but poorest in physical fitness.Chinese students are on average 168.17cm，compared with 167.61cm for South Korean students and 164.70cm for Japanese students.Chinese students asked for sick leave more than students in other countries.About 72 percent of Korean students never asked for sick and injury leave during high school，compared to 53 percent for Japanese students and 45 percent for Chinese students.Moreover，Chinese students drink alcohol and smoke earlier than Korean and Japanese students.Around 70 percent of Chinese students have drunk alcohol，compared to 50 percent for Korean and Japanese students.
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（1）What's the main idea of the second paragraph？
A．Chinese students ask for sick leave most often.
B．Chinese students drink most alcohol and smoke earliest.
C．Japanese students ask for least sick leave.
D．Chinese teenagers are tallest，but most unhealthy.
（2）It can be inferred from the passage that.
A．Chinese students are confident in themselves and luckier
B．Chinese students are luckiest，yet most unsuccessful
C．Japanese students are most stressed
D．South Korean students sleep the least
（3）What does the underlined word "that" refer to？
A．the height
B．the number
C．the weight
D．the appearance
（4）The worries that causes students to be stressed come from the following factors EXCEPT.
A．study and career
B．friendships
C．physical appearance
D．family relationship發(fā)布：2025/1/1 16:0:1組卷：0引用：3難度：0.5