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根据材料请回答 46~50 题
Most episodes of absent-mindedness - forgetting where you left something or wonder-ing why you just entered a room- are caused by a simple lack of attention, says Schacter.' You are supposed to remember something, but you haven't encoded it deeply.'
46 .Failure to encode properly can create annoying situations.If you put your mo-bile phone in a pocket, for example, and don't pay attention to what you did because you are involved in a conversation, you will probably forget that the phone is in the jacket now hanging in your wardrobE.'Your memory itself isn't failing you,' says Schacter.' 47 .'
48 .'A man who can recite sports statistics from 30 years ago,' says Zelinski,'may not remember to drop a letter in the mailbox.' Women have slightly better memories than men, possibly because they pay more attention to their environment, and memory re-lies on just that.
Visual cues can help prevent absent-mindedness, says Schacter.' 49 ,' he cautions.If you want to remember to take a medication with lunch, put the pill bottle on the kitchen table don't leave it in the medicine chest and write yourself a note that you keep in a pock-et.
Another common episode of absent-mindedness: walking into a room and wondering why you are therE.Most likely, you were thinking about something elsE.'Everyone does this from time to time,' says Zelinski. 50 .
A.Encoding, Schacter says, is a special way of paying attention to an event that has a major impact on recalling it later
B.Rather, you didn't give your memory system the information it needed
C.The best thing to do is to return to where you were before entering the room, and you will likely remember
D.They are more interested in what's happening around them
E.But be sure the cue is clear and available
F.Lack of interest can also lead to absent - mindedness
第 46 题 请选择(46)处的最佳答案

A.'
B.'
46
C.Failure
D.If
E.'Your
F.'
G.'
48
H.'A
I.'
J.
Visual
K.'
L.If
M.
Another
N.Most
O.'Everyone
P.Encoding,
Q.Rather,
R.The
S.They
T.But
U.Lack

【参考答案】

A
正确答案是:A。上一段的结尾提到了“编码”的问题,而空白处的后一句话同样有“en—code”字样出现,那么很......

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根据材料请回答 16~22 题Finding a babysitter while you go out to work is, for example, an inconveniencE.For the African wild dog, one of the continent's most endangered carnivores(食肉动物), it's a matter of life and death. A new research shows that once packs(兽群)fall below a certain size, they are not enough animals to both hunt food and stay at home protecting the young. The African wild dog has declined drastically over the past century.Habitual loss(栖息地的丧失), persecution and unexplained outbreaks of disease have all been blameD.On-ly 3 000 to 5 000 animals remain, and the species is expected to go extinct within decades if the trend continues. Other large carnivores such as the spotted hyena(鬣狗)face similar pressures, yet are not declining.Now Franck Courchamp of Cambridge University has found a reason why.The dog's weakness lies in its social organization. Within each pack of up to 20 adults and pups, only the dominant male and female breeD.The remaining animals help raise the pups, cooperating to hunt prey and defend the kill from other carnivores. Because pups can't keep up on a hunt, large packs leave an adult behind to protect them from predators(捕猎者), which include lions and hyenas.But leaving a babysitter al-so carries costs.A smaller hunting party is less able to tackle large prey and to defend the kill.There is also One less stomach in which to carry food back to the den, and one more mouth to feed when they get therE.Courchamp investigated this awkward trade-off(权衡)by modeling how the costs of a babysitter change with decreasing pack sizE.This showed that packs of more than five a- dults should be able to feed all the pups and still spare a babysitter.But with smaller packs, either the hunting or the babysitting suffers, or the animals have to compensate by increasing the number of hunting excursions which itself carries a cost to the pack. Field observations in Zimbabwe supported the model.Packs of five animals or fewer left pups unguarded more frequently than larger packs diD.There was also evidence that when they did leave a babysitter, they were forced to hunt more often. A pack which drops below a critical size becomes caught in a vicious circle(恶性循环), says Courchamp, who is now at Paris-Sud University.'Poor reproduction and low survival further re-duces pack size, culminating in(最终造成)failure of the whole pack.' And deaths caused by hu-man activity, says Courcharnp, may be what reduce pack numbers to below the sustainable thresholD.Mammal ecologist Chris Carbone at London's Institute of Zoology agrees.Maintai-ning the integrity of wild dog packs will be vital in preserving the species, he says.第 16 题 The African wild dog has been endangereD.A.RightB.WrongC.Not mentioned
A.For
B.Habitual
C.On-ly
D.Now
E.The
F.But
G.A
H.There
I.This
J.But
K.Packs
L.There
M.'Poor
N.'
O.Mammal
P.Maintai-ning
Q.
A.Right
B.Wrong
C.Not