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101．The lack of water has become a
（全球的） problem that needs to be solved urgently.發(fā)布：2024/12/15 0:0:1組卷：14引用：4難度：0.7102．Many years ago，people relied on the sun，the moon and stars to find their way around.Later，the compass was introduced.And now，we have the satellite navigation（衛(wèi)星導航） system to guide us.The system uses groups of satellites to show the user's location.They send information to a receiver，such as a smartphone，to show us where we are.
The earliest built satellite navigation system is the Global Positioning System（GPS），which belongs to the U.S.Then there is Russia's Global Navigation Satellite System，the European Union's Galileo and China's own satellite navigation system，BeiDou.
On October 14，2017，an ARJ21-700 plane，which was the first domestically-produced jet equipped with the BeiDou navigation system，successfully completed a test flight.The results showed the performance of the system developed by China matches that of similar systems produced abroad，according to the Commercial Aircraft Corporation of China.
Since its introduction in 2000，the BeiDou navigation system has seen increasing numbers of applications linked to everyday life，from shared bikes to farming.
When it comes to shared bikes，smart locks that support BeiDou chips offer more accurate positioning than others，making it easier to find a bike.
Farmers can use BeiDou-enabled tractors to plow the soil and use unmanned aircraft with BeiDou to sow seeds，which can improve efficiency and make better use of resources.BeiDou's farming applications have spread from Heilongjiang Province to Beijing，Liaoning，Shanxi，Hubei and other regions across China.
With its many uses，the BeiDou navigation system is even playing a big role in the Belt and Road Initiative."To date，the BeiDou system has covered most parts of the Asia-Pacific region，as well as countries along the Silk Road Economic Belt and the 21st Century Maritime Silk Road，"said Yang Changfeng，chief designer of the BeiDou system.
Today，there are more than 20 BeiDou satellites above our heads，and China plans to launch even more this year to expand the BeiDou network to better serve the Belt and Road Initiative.
"As BeiDou expands its overseas reach，it will be increasingly popular in the logistics（物流） industry，"said Miao Qianjun，secretary-general of the navigation services association."Ships，for example，can use it to position themselves while sailing across oceans to European countries，no longer limited to Southeast Asian regions in the near future."
（1）What is the purpose of the first two paragraphs？
A．To compare some modern satellite navigation systems.
B．To describe the benefits of satellite navigation systems.
C．To tell us how satellite navigation systems were created.
D．To introduce some satellite navigation systems and their functions.
（2）What can we know about the BeiDou navigation system according to the article？
A．It was used successfully in a new jet plane.
B．It is more powerful than other satellite navigation systems.
C．It was introduced to China on October 14，2017.
D．It wasn't used in our everyday life until recently.
（3）What is the BeiDou navigation system already widely used for according to the article？
A．Plowing the soil and sowing seeds.
B．Improving the efficiency of networks.
C．Producing more smart locks for shared bikes.
D．Navigating ships across oceans to European countries.
（4）What is Miao Qianjun's attitude toward the future of the BeiDou system？
A．Worried.
B．Casual.
C．Positive.
D．Doubtful.發(fā)布：2024/12/14 23:0:1組卷：4引用：2難度：0.5103．Henry
walk when he was one year old.發(fā)布：2024/12/14 23:0:1組卷：3引用：6難度：0.7104．In the job interviews，job applicants often find themselves
（ask） unexpected questions，some very difficult to answer．發(fā)布：2024/12/14 22:30:1組卷：36引用：7難度：0.7105．It rained heavily in the south，
（cause） serious flooding in several provinces．發(fā)布：2024/12/14 21:30:2組卷：19引用：11難度：0.9106．There are still many problems
（solve）before we are ready for a long stay on the moon．發(fā)布：2024/12/14 20:30:1組卷：142引用：18難度：0.6107．Six years ago a small Texas book maker published a book written by a father and son.The work，based on a series of studies done in rural China，challenged the traditional opinion about health and nutrition by explaining the benefits of a plant-based diet.
The book，called The China Study，has since sold 500，000 copies，making it one of the country's best-selling nutrition titles，which is unexpected.Researchers from Cornell University，Oxford University and the Chinese Academy of Preventive Medicine had taken 20 years to finish the studies，and found that an animal-based diet was more likely to result in chronic（慢性的）diseases，while those who ate mostly plants were the healthiest.Last fall，former President Bill Clinton even mentioned the book in explaining how he lost 24 pounds by turning to a plant-based diet in the hope of improving his heart jye.aialth.He says he lives mainly on beans and other vegetables and fruit，although he eats fish at times.
The Americans used to hold the view that the more milk，meat and eggs they take，the better.But the book shows that taking in too much protein adds to the risk of many blood and heart problems.T.Colin Campbell，a co-author of the book，said， "I learned that protein is not quite what we thought it was We get all the problems we have because of the wrong idea，" The book suggests a 100 percent plant-based diet，and Colin's family all eat that way.He thinks the closer we get to plant-based diet，the healthier we are going to be.
（1）The book The China Study is mainly about.
A．the benefits of a plant-based diet
B．a(chǎn) new eating style to keep slim
C．the problems with Chinese rural diets
D．the cause of many chronic diseases
（2）Why did Bill Clinton refer to the book？
A．Because the book helped him to solve his health problems.
B．Because the book helped him to lose weight.
C．Because he eats a 100 percent plant-based diet as the book suggests.
D．Because he can make money by advertising the book.
（3）According to T.Colin Campbell，.
A．people should eat a 90 percent plant-based diet
B．people usually have wrong ideas on protein
C．the more milk，meat and eggs people take，the better
D．people get blood and heart problems because they take too much protein
（4）Which of the following is the best title for the text？
A．Wrong Opinions About Protein
B．More Families Choose to Eat Plants Only.
C．Nutrition Advice from The China Study
D．Different Diets in China and America發(fā)布：2024/12/14 20:0:1組卷：5引用：2難度：0.6108．Whale breathe through lungs just as we humans do， so they_______come up for air．（ ?。?/h2>
發(fā)布：2024/12/14 20:0:1組卷：90引用：2難度：0.6109．The bad health effects of sleep loss during the week can't be repaid by longer weekend sleep，according to a new study.
Researchers have long known that sleep deprivation （剝奪）can cause weight gain and increase other health risks.But for those who force themselves out of bed every weekday after too few hours of shut-eye，they hope turning off the alarm on Saturday and Sunday will repay the weekly sleep debt and remove any ill effects.
The research，published in Current Biology，crushes those hopes.Despite complete freedom to sleep during a weekend recovery period，people in a sleep lab who were limited to five hours of sleep on weekdays gained nearly three pounds over two weeks and experienced disorders that would increase their risk for diabetes over the long term.While weekend recovery sleep had some benefits after a single week of sleep loss，those gains were wiped out when people fell right back into their same sleep-deprived schedule the next Monday.
"If there are benefits of catch-up sleep，they're gone when you go back to your daily schedule.It's very short-lived，" said Kenneth Wright，director of the sleep and chronobiology lab at the University of Colorado at boulder. "These health effects are long-term.It's kind of like smoking once was-people would smoke and wouldn't see an immediate effect on their health，but people will say now that smoking is not a healthy lifestyle choice.I think sleep is in the early stage of where smoking used to be. "
Wright said that the study suggests people should put sleep in the first place-cutting out the "sleep stealers" such as watching television shows or spending time on their phones.Even when people don't have a choice about losing sleep because of child-care responsibilities or job schedules，they should think about getting sleep in the same way they would get a healthy diet or exercise.
（1）What do the researchers find about weekend recovery sleep？
A．It is common among people.
B．It will make people healthier.
C．It can make people put on weight.
D．It's able to make up for the sleep loss.
（2）What does the underlined word "crushes" mean？
A．Arouses.
B．Guarantees.
C．Deepens.
D．Ruins.
（3）What will Kenneth Wright agree with？
A．It takes long for people to see the effects of sleep loss.
B．Smoking and sleep loss have the same bad effects.
C．Weekend recovery sleep has many benefits.
D．Smoking is more harmful than sleep loss.
（4）What does Kenneth Wright advise people to do？
A．Sleep as long as possible during weekdays.
B．Watch some TV shows before bedtime.
C．Reduce the screen time before sleep.
D．Take regular exercise every day.發(fā)布：2024/12/14 16:0:1組卷：9引用：1難度：0.6110．Like ancient sailors，birds can find their way
（use）the sun and the stars．發(fā)布：2024/12/14 12:30:1組卷：41引用：9難度：0.7
