Of all animals in the animal kingdom, which one is smartest? There are several ways of measuring the intelligence of animals．In one test a scientist sets three identical cans on a table．While the an 题目和参考答案——青夏教育精英家教网—

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Of all animals in the animal kingdom, which one (aside from man) is smartest? There are several ways of measuring the intelligence of animals．In one test a scientist sets three identical cans on a table．While the animal watches, he puts food under one of the cans．Then he leads the animal away．Some time later, he brings it back to see if it remembers which can has the food．No sniffing is allowed; the animal must go directly to the correct can if it fails.

This is called a delayed-response test．The idea is to fond out how long an animal’s memory can retain information．The scientists would try showing the cans to the animal one hour later, or two hours later, or even a full day later．They discovered that chimpanzees (黑猩猩) and elephants have the best memory, and are able to remember the correct can for at least twenty hours．No other animal is close．Dogs came next, but they only remembered for nine hours.

To settle the matter, the scientists devised a gigantic(巨大的) maze(迷宫) and ran the chimps and elephants through it．The maze was very complicated, with many blind alleys and dead ends．It took the chimps ten minutes to find their way out ．The elephants needed a half hour．Even allowing for the elephants’ slower rate of speed, the test indicates that chimpanzees are the smartest animals.

From this and other tests, the scientists drew the following conclusion: an animal’s intelligence depends on the size of its brain in proportion to the size of its body．The elephant’s brain weighs ten pounds．But this is only 1/600th of its 6,000-pound body．A chimp’s brain weighs about one pound, or 1/120th of its total body weight．So in proportion to its body size, the chimp has four times as much brain as the elephant-more brain for less body．The chimp is the champ!

1．Select the best title ________.

A．The Elephant’s Memory

B．School for Animals

C．The Chimp’s Brain

D．The Smartest Animal

2． The main idea of this passage is that ________.

A．there are several ways of measuring the intelligence of animals

B．chimps and elephants have the best memory

C．intelligence tests show that the chimp is the smartest animal

D．the scientists devised a gigantic maze and ran the chimps and elephants through it

3．The delayed-response test is designed to test an animal’s ________.

A．eyesight

B．intelligence

C．learning ability

D．memory

4．The passage indicates that elephants ________.

A．never forget

B．are smarter than chimps

C．are slower-moving than chimps

D．have better memories than chimps

5．According to the passage, a rhinoceros(犀牛) that weighs 2100 Lbs, and has a 3-Lb brain is ________.

A．equal in intelligence to a chimp

B．more intelligent than an elephant

C．less intelligent than an elephant

D．equal in intelligence to an elephant

答案：DCDCC
提示：

1.　　本文主要讲科学家研究哪种动物最聪明

2.　　整个实验过程的结论是最后一句话The chimp is the champ! chimp最聪明

3.　　参见第二段前两句话

4.　　走出迷宫chimp花了10分钟,但大象用了半小时,可见大象比猩猩慢

5.　　 3/2100=1/700, 小于1/600, 故不如大象聪明

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Biologists and conservationists are worried because polar bears, dolphins, penguins and other creatures are getting stressed and losing weight and some are dying.

"Evidence is growing that many animals do not react well to tourists in their backyard，” New Scientist magazine said.

The immediate effects "researchers have noticed are changes in behavior, heart rates. or stress hormone levels but they fear it could get much worse and over the long term “ could endanger the survival of the very wildlife they want to see. ”

Although money produced through ecotourism, which has been growing at about 10-30 percent a year, has major benefits for poor countries and people living in rural areas, the Swiss-based World Conservation Union (IUCN) and some governments fear not all projects are audited（审计） and based on environmentally friendly policies，according to the magazine.

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Scientists have noticed that bottleneck dolphins along the northeastern coast of New Zealand become nervously excited when tourist boats arrive. Similar changes in behavior have been observed in polar bears and yellow-eyed penguins in areas visited by colorists are producing smaller babies.

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A. Many animals do not react well in their backyard

B. Studies should be done before new ecotourism projects are started

C. Ecotourism has been growing at about 10—30 percent a year.

D. polar bears in areas visited by ecotourists are producing smaller babies.

4.What Rochelle Constantine said in the last paragraph implies that _____.

A. if people want to get high income, they must develop ecotourism

B. animals have rights to live their own life

C. animals are people's good friends

D. people should take good care of wildlife

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1.What does the author mean by saying “Plants and animals usually do not live apart”?

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endangering the survival of the very animals people are flocking to see, according to researchers.

Biologists and conservationists are worried because polar bears ，dolphins, penguins and other creatures are getting stressed and losing weight and some are dying.

"Evidence is growing that many animals do not react well to tourists in their backyard，” New Scientist magazine said.

Although money produced through ecotourism, which has been growing at about 10—30 percent a year, has major benefits for poor countries and people living in rural areas, the Swiss—based World Conservation Union (IUCN) and some governments fear not all projects

are audited and based on environmentally friendly policies，according to the magazine.

^4<Transmission of disease to wildlife，or small changes to wildlife health through disturbance of daily life or increased stress levels, while not obvious to the casual observer, may translate to lower survival and breeding，” said Philip Seddon , of the University of Otago in Dunedin, New Zealand.

The animals ，welfare should be very important because without them there will be no ecotourism，” said Rochelle Constantine of the University of Auckland in New Zealand

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A. Many animals are dying because of lack of money.

B. There will be no ecotourism without animals.

C Ecotourism could endanger the survival of the wildlife people want to see.

D. More research should be done on ecotourism.

60. We may learn from the text that _____.

A ecotourism must be developed properly

B. polar bears are losing weight without enough food

C. all the poor countries have stopped ecotourism

D. money produced through ecotourism should be spent on wildlife

61. Which of the following is Not mentioned in the text?

A. Many animals do not react well in their backyard

B polar bears in areas visited by ecotourists are producing smaller babies.

C. Ecotourism has been growing at about 10—30 percent a year.

D. Studies should be done before new ecotourism projects are started

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A. if people want to get high income, they must develop ecotourism

B. animals have rights to live their own life

C. animals are people's good friends

D. people should take good care of wildlife

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