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發(fā)布:2024/11/25 8:30:2組卷:0引用:1難度:0.52862.Those guests ________ at the front row came here from a European country this morning.( ?。?/h2>
發(fā)布:2024/11/25 8:30:2組卷:81引用:2難度:0.62863.We were delayed at the airport.O
發(fā)布:2024/11/25 8:0:20組卷:14引用:5難度:0.82864.If you think that running marathons will help you live a long and healthy life,new research may come as a shock.According to a recent scientific study,people who do a very strenuous workout are as likely to die as people who do no exercise at all.
Scientists in Denmark have been studying over 1,000 joggers(慢跑者)and non - joggers for 12 years.The death rates from the sample group indicate that people who jog at a proper pace two or three times a week for less than two and a half hours in total are least likely to die.The best speed to jog at was found to be about 5 miles per hour.The research suggests that people who jog more than three times a week or at higher speeds of over 7 mph die at the same rate as non - joggers.The scientists think that this is because strenuous exercise causes structural changes to the heart and arteries(動(dòng)脈).Over time,this can cause serious effects.
Peter Schnohr,a researcher in Copenhagen,said,"If your goal is to decrease risk of death and improve life expectancy(壽命),jogging a few times a week at a proper pace is a good strategy.Anything more is not just unnecessary,and it may be harmful."
The implications(暗示)of this are that moderate forms of exercise such as tai chi,yoga and walking may be better for us than "iron man" events,triathlons and long-distance running and cycling.According to Jacob Louis Marott,another researcher involved in the study, "You don't actually have to do that much to have a good impact on your health.And perhaps you shouldn't actually do too much".
(1)Which of the following words can replace "strenuous" in Paragraph 1?
A.regular.
B.hard.
C.practical.
D.limited.
(2)Why does the author presents the figures (數(shù)字) in Paragraph 2?
A.To suggest giving up jogging.
B.To show risks of doing sports.
C.To provide supportive evidence.
D.To introduce the research content.
(3)According to the scientists,why is too much exercise harmful?
A.It may injure the heart and arteries.
B.It can make the body tired out.
C.It will bring much pressure.
D.It consumes too much energy.
(4)What can be the best title of the text?
A.No exercise at all is the best choice.
B.More exercise means a healthier life.
C.Marathons runners are least likely to die.
D.Too strenuous exercise is no better than.發(fā)布:2024/11/25 8:0:20組卷:14引用:4難度:0.62865.難怪我聽到不同的英語,他們每個(gè)人都有著不同的口音。
發(fā)布:2024/11/25 8:0:2組卷:0引用:1難度:0.72866.In the Stone Age,people didn't need to find salt.They were hunting a lot of their food,and eating a lot of red meat.Red meat has plenty of salt in it,and naturally,people at that time didn't have to go and find extra salt.But when people began to farm,about 10,000 BC,they started to eat mainly grains like rice and very little meat.Then they really needed another way to get salt.People sprinkled(灑) salt on different kinds of food,because there were no refrigerators.
The earliest evidence we have for people producing salt comes from northern China,where people seem to have been harvesting salt from a salt lake by 6,000 BC and maybe earlier.
By about 4,500 BC,Central Asian people along the shores of the Caspian Sea were mining rock salt underground.This is the earliest known salt mine in the world.
By 800 BC,Chinese written records tell us that people in China were producing salt by boiling ocean salt water until the salt was left.About the same time,in Europe,the Indo-European Celts(凱爾特人)were mining salt underground in modern Austria,Hungary,southern Cermany and Poland.
By 252 BC,a Chinese governor named Li Bing also worked out how to mine salt.Men dug deep wells down to where there were natural underground salt water pools,and took the salty water out.
Because everyone needed salt,but only a few people could produce it,salt was something everybody bought.Governments,therefore,began to tax it to raise a lot of money.Both the Han Dynasty and the Tang Dynasty,in China,got a lot of their money from the salt trade.About 1,000 AD,businessmen brought salt across the desert on the backs of the camels.The businessmen used the salt to buy slaves and goods from West Africa.Then they forced the slaves to mine even more salt.
(1)People in the Stone Age didn't have to find salt because
A.they ate lots of red meat which contains salt
B.they didn't know how to preserve food
C.they couldn't adapt to the taste of salt
D.they gave meat to others in exchange for salt
(2)According to the passage,how did the Central Asian people get salt?
A.By boiling ocean salt water
C.By taking salt water from salt water pools
C.By harvesting salt from a salt lake
D.By mining rock salt underground
(3)What can be inferred from the last paragraph?
A.Many people couldn't afford to buy salt
B.Salt once functioned as money in ancient times
C.Salt was the main source of economy in the Tang Dynasty
D.West Africa learned how to mine salt from China.發(fā)布:2024/11/25 8:0:2組卷:9引用:1難度:0.72867.The president,
發(fā)布:2024/11/25 7:30:1組卷:7引用:3難度:0.72868.In many ways,the education system in the US is not very different from ________ in the UK.( )
發(fā)布:2024/11/25 7:30:1組卷:25引用:1難度:0.92869.
發(fā)布:2024/11/25 7:0:1組卷:2引用:1難度:0.62870.Sorry I'm late.I might have turned off the
發(fā)布:2024/11/25 6:30:1組卷:8引用:2難度:0.7