How Do Animals Catch their ZZZ's（打鼾声）？
Different creatures have developed some pretty creative ways to get their rest and stay safe． The lizard likes to sleep at the far end of small branches hanging out over a pond or lake in the rain forest． If a snake tries to slither up the branch to eat it, it will shake the branch and knock the lizard off, and the lizard will fall safely into the water． Chameleons can change color to match their surroundings in order to hide even while sleeping．
Gorillas like to sleep high in the trees． They build a new bed every night, sometimes taking up to half an hour to pile branches, twigs, and leaves into a comfortable bed． Birds also find it safe to sleep in the trees, but unless they have eggs or young chicks, they don't use a nest． They just lock their feet around a branch and hang on． A special tendon in their legs is automatically tight when they are at rest, so they won't let go and fall．
Dolphins live underwater, but must come to the surface to breathe． Scientists now believe that dolphins may sleep with only half their brain, while the other half stays awake to keep them safe and breathing． Seals also do this, lying on their sides on the surface of the water with one flipper underwater paddling to keep their noses above the surface． Some ducks may also have this ability, and actually sleep with one eye closed and one eye open．
1.How does a chameleon protect itself while sleeping?
A．By changing its body colors
B．By hanging out over a pond．
C．By sleeping with half their brain．
D．By making beds with branches．
2.Why will not birds fall when they are at rest?
A．They build nests and sleep in them．
B．They fall asleep automatically．
C．They have a loose tendon in their legs．
D．They lock their feet around a branch．
3.How do dolphins breathe?
A．They breathe underwater．
B．They come to the surface to breathe．
C．They breathe underwater or come to the surface to breathe．
D．We don't know．
4.What does the writer intend to tell us?
A．The cleverest animal is the gorilla because it can make beds．
B．Differences in habitat can lead to different living habits．
C．The ways animals catch their ZZZ's are pretty much the same．
D．In order to protect themselves most animals choose not to sleep
1.A
2.D
3.B
4.B
【解析】
试题分析：本文主要讲述的是动物在水面的时候如何保护自己，不同的动物有不同的习惯。
1.A 细节题。根据第二段最后一句Chameleons can change color to match their surroundings in order to hide even while sleeping．说明Chameleons是通过改变身体的颜色来保护自己的，故A正确。
2.D 细节题。根据第三段第4,5行They just lock their feet around a branch and hang on．说明他们的脚是紧紧扣住树枝。故D正确。
3.B 细节题。根据文章第四段第一行Dolphins live underwater, but must come to the surface to breathe．说明海豚是要到水面上呼吸空气的，故B正确。
4.B 主旨大意题。本文中提及了很多不同的动物在睡眠的时候采取不同的方式来保护自己。说明不同的生物有不同的生活习惯。故B正确。
考点：考查科普类短文
点评：本文主要讲述的是动物在水面的时候如何保护自己。本文属于科普类短文，最大的障碍是词汇以及考生对阅读内容的不熟悉，需要考生在阅读的时候有足够的耐心。要养成在上下文串联中猜测词义的能力，根据上下文中出现的同义词，近义词，反义词，以及词义的解释来理解生词。同时要抓住文章的中心，不要受其他信息的影响。要根据题目及选项以及文章的上下文串联合理的判断推理。
学而优暑期衔接南京大学出版社系列答案
Happy holiday欢乐假期暑假作业广东人民出版社系列答案科目：高中英语 来源：2012-2013学年上海市虹口区高考一模英语试卷（解析版） 题型：其他题
Plants and animals usually do not live apart, as in many ways they are important to each other. Most green plants can make their own food. The food of other living things, even the food of meat-eating animals, comes directly or indirectly from green plants. For example, some people eat mutton (羊肉); mutton comes from a goat; the goats eat grass. These steps, or links, make up what is called a food chain. Without green plants, all other living things would in time die of starvation.
Plants help animals in other ways too. They furnish homes and shelter for many animals. Many birds, as you know, build their nests in trees. Deer and many other animals use bushes for shelter. And even man depends much upon plants for his shelter. Animals repay some of this debt by helping plants. You may be aware that many insects and some birds do important work for plants by pollinating (授粉) them. You must have also learned how animals often help plants by spreading seeds.
What is waste material for one of these kinds of life is often valuable substance for the other. For example, animals give off carbon dioxide gas when they breathe. When plants make food, they absorb this gas from the air, using the carbon and releasing some of the oxygen back into the air. The oxygen that is released, then, is again supplied to animals. Thus the cycle continues, animals helping plants, and plants helping animals.
All plants and animals have their enemies. Insects eat plants; birds eat insects; other animals kill birds. But here too, animals such as birds and bats help the plants by destroying harmful insects. Many plants and animals are helpful to some living things but are harmful to others. Then there are other rules in nature that act as checks and balances. For example, if there are more animals in a certain area than there is food to support them, some of the animals must migrate or starve. In either case, the number of animals will be reduced until the balance between animals and the available food supply is restored.
These helps and hindrances (障碍) are constantly going on in the plant and animal world to achieve a balance. As long as one living thing is dependent on another, whenever the scales are tipped (使倾斜), nature takes steps to balance the scales again.
(Note: Answer the questions or complete the statements in NO MORE THAN TEN WORDS.)
1.What does the author mean by saying “Plants and animals usually do not live apart”?
2.Besides providing food and shelter for animals, plants can also ______ to help animals to live.
3.“Checks and balances” refers to ______ in the world of animals and plants.
4.What will be the final result if some animals migrate or starve for lack of food?
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
Plants and animals usually do not live apart, as in many ways they are important to each other. Most green plants can make their own food. The food of other living things, even the food of meat-eating animals, comes directly or indirectly from green plants. For example, some people eat mutton (羊肉); mutton comes from a goat; the goats eat grass. These steps, or links, make up what is called a food chain. Without green plants, all other living things would in time die of starvation.
Plants help animals in other ways too. They furnish homes and shelter for many animals. Many birds, as you know, build their nests in trees. Deer and many other animals use bushes for shelter. And even man depends much upon plants for his shelter. Animals repay some of this debt by helping plants. You may be aware that many insects and some birds do important work for plants by pollinating (授粉) them. You must have also learned how animals often help plants by spreading seeds.
What is waste material for one of these kinds of life is often valuable substance for the other. For example, animals give off carbon dioxide gas when they breathe. When plants make food, they absorb this gas from the air, using the carbon and releasing some of the oxygen back into the air. The oxygen that is released, then, is again supplied to animals. Thus the cycle continues, animals helping plants, and plants helping animals.
All plants and animals have their enemies. Insects eat plants; birds eat insects; other animals kill birds. But here too, animals such as birds and bats help the plants by destroying harmful insects. Many plants and animals are helpful to some living things but are harmful to others. Then there are other rules in nature that act as checks and balances. For example, if there are more animals in a certain area than there is food to support them, some of the animals must migrate or starve. In either case, the number of animals will be reduced until the balance between animals and the available food supply is restored.
These helps and hindrances (障碍) are constantly going on in the plant and animal world to achieve a balance. As long as one living thing is dependent on another, whenever the scales are tipped (使倾斜), nature takes steps to balance the scales again.
(Note: Answer the questions or complete the statements in NO MORE THAN TEN WORDS.)
81. What does the author mean by saying “Plants and animals usually do not live apart”?
82. Besides providing food and shelter for animals, plants can also ______ to help animals to live.
83. “Checks and balances” refers to ______ in the world of animals and plants.
84. What will be the final result if some animals migrate or starve for lack of food?
查看答案和解析>>
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