A.Thin people also have troubles. |
B.Internal fat is of no importance. |
C.Internal fat leads to many diseases. |
D.Thin people may be fat inside. |
A.being slim doesn't mean you are not fat inside |
B.internal fat is the cause of heart disease and diabetes |
C.being slim is not dangerous at all |
D.the exact dangers of internal fat |
A.People with heart disease all have internal fat. |
B.People can get rid of internal fat by improving diet. |
C.Men are more likely to have too much internal fat. |
D.Exercise can help to reduce the internal fat. |
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A.Twitter is having a hard time |
B.old cottages are in need of protection |
C.early settlers once suffered from a dry climate in Montana |
D.Internet companies have rediscovered the benefits of low technology |
A.is related to nature | B.is out of date today |
C.consumes too much energy | D.exists in the virtual world |
A.have destroyed many pre-industrial arts |
B.have a tradition of valuing arts and crafts |
C.can become intelligent by learning history |
D.can regain their individual identity by using machines |
A.positive | B.defensive | C.cautious | D.doubtful |
A.Past Glories, Future Dreams |
B.The Virtual World, the Real Challenge |
C.High-tech Companies, Low-tech Offices |
D.The More Craftsmanship, the Less Creativity |
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A.music is important for human beings’ mental and physical health |
B.music is played by people from all over the world |
C.music is of great benefits to human language |
D.music is present throughout the development of human culture |
A.An experiment at the University of California. |
B.A study done in the United kingdom. |
C.A study on mass media and teenagers. |
D.A study from Sweden. |
A.The lyrics | B.The tone | C.The style | D.The speed |
A.parents should monitor what their children are listening to |
B.music can have harmful effects on teenagers |
C.teenagers are more likely to be affected by their friends |
D.children shouldn’t be exposed to too much music |
A.More bad effects of music on teenagers’ daily habits. |
B.Some experiments about music and teenagers. |
C.Tips for parents on monitoring the music their children prefer. |
D.Benefits of listening to a variety of music. |
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A.Scientists Find New Substance to Fight Mosquitoes |
B.A New Generation of DEET Has Been Developed to Kill Mosquitoes |
C.Malaria一a Serious Disease Causing 630,000 Deaths |
D.Ethyl Pyruvate一an Insect Behavior Control Product |
A.kill the mosquitoes' smelling neurons |
B.cause the mosquitoes to lose their sense of smell |
C.result in the inactiveness of the mosquitoes' receptor |
D.make the mosquitoes uninterested in human breath and skin smell |
A.inform readers of the new development in fighting mosquitoes |
B.praise the achievements made in the battle against malaria |
C.introduce a cheaper product in fighting mosquitoes |
D.tell the differences between Ethyl Pyruvate and DEET |
A.the column of newspaper ads |
B.the health column of a magazine |
C.a(chǎn) textbook of medical schools |
D.a(chǎn) collection of doctors' essays |
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A.improve water quality |
B.help sensitive species |
C.control the number of native fishes |
D.control the ecosystem in aquaculture |
A.testing various barrier technologies |
B.construction of an underwater electric fence |
C.Emptying and washing boats before using them. |
D.monitoring the Mississippi and its branches for Asian carp |
A.a(chǎn)quaculture operations are dangerous to the water bodies |
B.scientific technology is useless in preventing Asian carp spreading |
C.both the state and the individuals can make efforts to keep out Asian carp |
D.Asian carp have successfully invaded the Mississippi and the Great Lakes |
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A.to call for us to protect animals |
B.to show where to buy pictures of animals |
C.to explain how to get along with wild animals |
D.to give us tips on taking pictures of animals in the wild |
A.Respecting the animals. |
B.Making gentle movements. |
C.Making the animals happy. |
D.Changing the flash of your camera to natural light. |
A.a(chǎn)sk the owner to take pictures for us |
B.a(chǎn)sk for the owner’s permission first |
C.make sure the owner is present when we take pictures |
D.take pictures when the owner is feeding animals |
A.most animals love being taken pictures of |
B.we have to finish the pictures before sunset |
C.we’d better take pictures when the animals are sleeping |
D.we should pay attention to the animals’ moods when taking pictures |
A.①②④ | B.②③④ | C.①②③ | D.①③④ |
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A.can fly in the sky at “highway speeds” in car mode |
B.is a kind of car with fold-out wings |
C.is a little difficult to fuel |
D.can only travel on the highway |
A.there are some skillful pilots |
B.pilots have no cars to drive |
C.pilots can’t afford a “roadable” plane |
D.cars can fly in the sky |
A.Light-sport airplane. |
B.Your garage. |
C.The local airport. |
D.A petrol station. |
A.call for people to buy the “roadable” plane |
B.show people the use of the “roadable” plane |
C.tell people only the “roadable” plane can fly in the future |
D.a(chǎn)sk people to unfold their wings and fly into the future |
A.land in a nearby airport until it clears |
B.turn back home until it clears |
C.land and drive on the ground |
D.fly high up to 460 miles |
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A.Because it has lost its natural instincts. |
B.Because there is not a complete ecochain. |
C.Because there is no space for it. |
D.Because uncontrolled hunting has destroyed its natural living conditions. |
A.Its effect still remains to be seen. |
B.Two tigers can already compete with their wild cousins. |
C.Some of the tigers are already on the road to recovering their natural skills. |
D.The tigers should be able to recover their instincts completely by 2007. |
A.they are no longer feared by other wild animals |
B.they don't know how to hunt or kill |
C.a(chǎn) complete change has resulted in the species because of breeding |
D.to reintroduce them into the wild has become an urgent task |
A.To help the tigers recover their ability to live in the wild. |
B.To provide them with a better environment. |
C.To get the tigers to go on a tour. |
D.To find a complete ecochain for them. |
A.Because the tigers can hunt wild animals by themselves at the African base. |
B.Because South Africans are skilled at dealing with the tigers. |
C.Because there is a complete ecochain and enough space there. |
D.Because the country has good natural conditions for the tigers to learn in. |
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A.diseases and aging | B.a(chǎn)ccidents and war |
C.a(chǎn)ccidents and aging | D.heart disease and war |
A.medicine | B.the Internet | C.brain cells | D.human organ |
A.heart disease will be far away from us |
B.human brains can decide the final death |
C.the basic materials of cells will last forever |
D.human organs can be repaired by new medicine |
A.Over 100 years. | B.More than 120 years. |
C.About 150 years. | D.The passage doesn't tell us. |
A.Cells aren’t the basic units of all living things any more |
B.humans have to take medicine to build new skin cells now |
C.much needs to be done before humans can have a longer life |
D.we have already solved the technical problems in building new cells |
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