A.it’s always sold out due to its popularity |
B.it met some problems concerning design and manufacture |
C.it lacked white manufacturing materials |
D.its proximity sensor can’t save battery life |
A.There are multi-colored models of iPhone 4. |
B.The same design problems were also found in older white iPhones. |
C.IPhone4 will be launched this fall. |
D.Originally designers thought they could solve the problems before iPhone 4 was launched. |
A.Why the White iPhone 4 Took So Long |
B.The History of iPhone 4 |
C.The Attraction of White iPhone 4 |
D.The Design and Manufacture of iPhone 4 |
A.to remove one’s mask from his face |
B.to remove a cloth from something, especially as part of a ceremony |
C.to show to the public for the first time |
D.to disappear from the public for the first time |
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A.learn | B.have | C.explore | D.develop |
A.equally | B.hardly | C.definitely | D.eventually |
A.chase | B.hurry | C.focus | D.cheer |
A.constantly | B.frequently | C.occasionally | D.unexpectedly |
A.making friends | B.speed dating | C.family planning | D.home improving |
A.sick | B.fond | C.a(chǎn)ware | D.confident |
A.a(chǎn)cts | B.talks | C.lives | D.loves |
A.interest | B.background | C.intention | D.personality |
A.spare | B.limited | C.a(chǎn)ppointed | D.luxurious |
A.creative | B.passive | C.negative | D.objective |
A.introduced | B.devoted | C.mentioned | D.used |
A.demanding | B.surprising | C.convincing | D.a(chǎn)ppealing |
A.fun | B.love | C.friendship | D.a(chǎn)dventure |
A.In a word | B.As a result | C.On the whole | D.Believe it or not |
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A.the cables which tie the spar to the ocean floor |
B.the spar which is floating in deep-sea water |
C.the blades driven by strong and steady sea wind |
D.the stones filled in the spar below the sea surface |
A.on the sea floor | B.on the spar top |
C.a(chǎn)t sea level | D.behind the blades |
A.solve the technical problems of deepwater windmills |
B.make financial profits by producing more turbines |
C.settle the arguments about environmental problems |
D.explore low-carbon power resources available at sea |
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A.Pilots. | B.Flight attendants. | C.Passengers. | D.Airlines. |
A.smaller planes | B.passengers | C.larger aircrafts | D.safety records |
A.Many people don’t pay enough attention to fastening their seat belt. |
B.All passengers are glad to accept the crew’s advice. |
C.The crew are very responsible. |
D.There is no need to remind people to fasten their seat belt. |
A.Larger planes have more safety checks and are safer. |
B.Take-offs are safer on non-stop flights than landings. |
C.Every aircraft is different, so the safety procedures may be different. |
D.Seat belts should be worn to protect against turbulence. |
A.The safest way to travel | B.Air safety tips |
C.Non-stop routes | D.How to fly a plane |
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A.a(chǎn)t what point people grow live longer. |
B.how to make people live longer |
C.the size of certain people’s brains. |
D.which group of people are the busiest |
A.a(chǎn)n examination of farmers in northern Japan |
B.using computer technology |
C.examining the brain sizes of different people |
D.tests given a thousand old people |
A.our brains contract as we grow older |
B.one part of the brain does not contract |
C.sixty-year-olds have better brains than thirty-year-olds |
D.contraction of the brain begins sooner in people in the country |
A.engineers | B.office clerks | C.professors | D.researchers |
A.most of us should take more exercise |
B.it’s better to live in the towns |
C.the brain contracts if it is not used |
D.the more one uses his brain, the sooner he becomes old |
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A.Asia | B.Africa |
C.Europe | D.America |
A.To tell us the bad effects caused by smoking cigarettes |
B.To introduce the history of smoking |
C.To let us know what the cigarettes are made from |
D.To tell the readers that Columbus found the Indians smoking |
A.Tar | B.Nicotine |
C.Lung disease | D.Leave |
A.It can make new smokers feel dizzy or sick to their stomachs |
B.It lowers skin temperature |
C.It causes the heart to beat less fast |
D.Nicotine will probably kill a person if a smoker takes in too much of it. |
A.Where did cigarettes come from? |
B.The effect of smoking on your body. |
C.How to smoke is healthy? |
D.Who is the first smoker? |
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A.beat the children every day | B.treat the children in a soft way |
C.leave the children as they are | D.punish the children when necessary |
A.persuade | B.scold | C.forgive | D.punish |
A.rod their children | B.punish their children |
C.discipline their children | D.discipline and punish their children if necessary |
A.The naughty boy’s mother hit him |
B.The teacher’s daughter lived with her mother |
C.The daughter was thankful for her mother’ strict discipline |
D.The author was charged with child abuse by the daughter’s friends |
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A.A union for listing animals and plants on the earth |
B.A group of volunteers who are interested in wildlife |
C.An organization concerning the protection of rare species' survival |
D.A government made up officials, scientists and experts |
A.All the protection methods can’t work. |
B.The IUCN does most of the protection. |
C.The efforts China makes has paid off. |
D.Enough is done in wildlife protection. |
A.Bad weather | B.Over-hunting | C.Warmer oceans | D.Habitat destruction |
A.China has been paying great attention to protecting the natural resources. |
B.China has set up a lot of natural reserves. |
C.The natural reserves in China cover more than 15 percent of the nation's land area. |
D.The rate of China's natural reserves is lower than the average of the world. |
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Humpback whales are sometimes called performers of the ocean. This is because they can make impressive movements when they dive. The name “humpback”, which is the common name for this whale, refers to the typical curve shape the whale’s back forms as it dives. Sometimes the humpback will dive with a fantastic movement, known as a breach. During breaching the whale uses its powerful tail flukes to lift nearly two-thirds of its body out of the water in a giant leap. A breach might also include a sideways twist with fins stretched out like wings, as the whale reaches the height of the breach. A humpback whale breathes air at the surface of the water through two blowholes which are located near the top of the head. It blows a double stream of water that can rise up to 4 meters above the water. The humpback has a small dorsal fin located towards the tail flukes about two-thirds of the way down its back. Other distinguishing features include large pectoral fins, which may be up to a third of the body length, and unique black, and white spots on the underside of the tail flukes. These markings are like fingerprints: no two are the same. Humpback whales live in large groups. They communicate with each other through complex “songs”. | Quick Facts | |
Size: | 14m~18m in length 30~50 tons in weight | |
Living environment: | Open ocean and shallow coastline waters | |
Migration: | From warm tropical (熱帶的) waters, where they breed, to cold polar waters, where they eat. | |
Diet: | Shellfish, plants and fish of small size | |
Hunting: | Sometimes in groups, in which several whales form a circle under the water, blowing bubbles that form a “net” around a school of fish. The fish are then forced up to the surface in a concentrated mass. | |
Current state: | Endangered: it is estimated that there are about 5000~7000 humpback whales worldwide. |
A.cannot survive in waters near the shore |
B.doesn’t live in the same waters all the time |
C.lives mainly on underwater plants |
D.prefers to work alone when hunting food |
A.use its tail flukes to leap out of the water |
B.twist its body sideways to jump high. |
C.blow two streams of water |
D.communicate with a group of humpbacks. |
A.has its unique markings on it tail flukes |
B.has black and white fingerprints |
C.gets its name from the way it hunts |
D.is a great performer due to its songs |
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