A.the Internet | B.the time we have | C.the place we live | D.the mind |
A.a(chǎn)ppointment | B.connection | C.interview | D.a(chǎn)greement |
A.the Internet helps to keep in touch with friends far away |
B.the Internet determines the quality of social relationships |
C.the Internet greatly increases the size of social circles |
D.the Internet is of no value in social communication |
A.To keep in touch with old friends when we have moved away. |
B.To chat with friends often on the Internet. |
C.To make more new friends face to face. |
D.To stop using the Internet to make new friends. |
A.He thinks it useless | B.He is hopeful of it. |
C.He approves of it. | D.He doubts it. |
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A.poet | B.painter | C.teacher | D.student |
A.a(chǎn)t most 10, 000 words | B.below 500 words | C.over 5, 000words | D.a(chǎn)round 2, 000 words |
A.experiences | B.discovers | C.discusses | D.a(chǎn)ppreciates |
A.Novels are too long for us to read. |
B.Short stories are too short for us to read. |
C.Short stories have more details than novels. |
D.Short stories are more perfect and difficult than novels. |
A.How Do You Write a Short Story? | B.What Exactly Is a Short Story? |
C.Is a Short Story Similar to Poetry? | D.Are Short Stories Perfect and Complete? |
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A.To express his doubts. | B.To compare different ideas. |
C.To introduce points for discussion. | D.To describe the conditions on Earth. |
A.Humans are nature-born to do so. | B.Humans have the tendency to fight. |
C.Humans may find new sources of food. | D.Humans don’t like to stay in the same place. |
A.survival chances | B.potential resources |
C.unexpected benefits | D.physical possessions |
A.O ur genetic makeup. | B.Resources on the earth.. |
C.The adaptive ability of humans. | D.By-products in space exploration. |
A.Space exploration has created many wonders. |
B.Space exploration provides the best value for money. |
C.Space exploration can benefit science and technology |
D.Space exploration may help us avoid potential problems on Earth. |
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A.Eating healthy food every day. | B.Having the right types of genes. |
C.Having a healthy lifestyle. | D.Taking drugs that prevent ageing. |
A.10% | B.20% | C.30% | D.50% |
A.The team studied the genes of over 100 people over 100 years of age. |
B.The researchers found that mutations in certain genes lead to longer life. |
C.The researchers found ways to develop drugs that could cure age-related diseases. |
D.The study suggested that most people have genes that could lengthen their lives. |
A.drugs to slow ageing will be very expensive |
B.modern science will be able to find more longevity genes |
C.it is the duty of medical scientists to fight the problems of ageing |
D.scientists can make new genes that will allow longer life |
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A.It was a common tour to a foreign country. |
B.It was a journey to practice what students learned. |
C.It was to attract students’ interest in science. |
D.It was a trip to do practical science activities. |
A.she was afraid of walking on the beach at night |
B.she didn’t dare to catch the powerful turtles |
C.she had thought turtles were small animals |
D.she got crazy at the sight of turtles at night |
A.She learned to be grateful to her teachers. |
B.She understood the importance of what she had. |
C.She realized the beauty of foreign culture. |
D.She knew the importance of everyday life |
A.Teens Help Fight Turtle Extinction. |
B.Teens Take a tour to Costa Rica. |
C.Teens Have a Research on Turtles. |
D.Teens Learn to be Independent. |
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A.prove the convenience of using credit cards |
B.tell what impression credit cards leave on kids |
C.give advice on using credit cards wisely |
D.explain the pleasure credit cards bring to customers |
A.eager | B.a(chǎn)fraid | C.embarrassed | D.thankful |
A.He feels it is worth a try |
B.He is very supportive |
C.He is strongly against it |
D.He considers it as a pleasant experience |
A.parents should let teens own their credit cards earlier |
B.you shouldn’t be in control of credit cards |
C.it is never good for anyone to get a credit card |
D.learning to use credit cards is practical |
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A.he wrote seven books on trade policy |
B.he published more than 100 papers on water management |
C.he found a new kind of water in water-scarce areas |
D.he came up with the idea of virtual water |
A.The average American uses about 7,000 liters of water a day. |
B.The average Chinese uses nearly 2,300 liters of virtual water a day. |
C.An Englishman usually drinks about 140 liters of coffee a day. |
D.A hamburger usually contains about 2,400 liters of water. |
A.It helps us realize the importance of trade. |
B.It helps people do successful business. |
C.It helps us make use of water scientifically. |
D.It tells us how much water we use a day. |
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A.because human beings are intelligent | B.because a computer works as the brain does |
C.because of a network of many computers | D.because of the number of computers |
A.Radio telescope→SETI website→Volunteers’ computer→SETI base |
B.Radio telescope→SETI base→SETI website→Volunteers’ computer |
C.SETI base→SETI website→Volunteers’ computers→Radio telescope |
D.SETI base→Radio telescope→SETI website→Volunteers’ computers |
A.extra-terrestrial intelligence | B.human intelligence |
C.the SETI project | D.meta-computing |
A.a(chǎn) new way to work on the computer |
B.a(chǎn) new way to work and play games |
C.a(chǎn) new way to search for life outside the earth |
D.a(chǎn) new way to make computers learn to think for itself |
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A.Plenty of. | B.Not enough. | C.Abundant. | D.Little. |
A.is facing the same threat as many other parts of the world |
B.sets a good example in protecting animals |
C.is a place where giant pandas and their habitats are not affected |
D.is a place where animals and their habitats are seriously damaged |
A.Biodiversity is better kept in countries with smaller populations. |
B.Biodiversity is better kept in hotspot countries. |
C.The threat to nature from reduction in household size is a worldwide problem. |
D.Both hotspot countries and non-hotspot countries face the threat of the same scale. |
A.Reduced household size leads to an increase in household number. |
B.Modern homes consume more natural resources. |
C.How to meet consumer demand without endangering animals and their habitats. |
D.Reduction in household size as well as increase in household number threatens nature. |
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