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    Bears sleep . 【查看更多】

     

    题目列表(包括答案和解析)

    Koala bears sleep ________．

    [　　]

    A．at night

    B．during the day

    C．at noon

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     The koala bears sleep ____ the day and get up _____ night.

     A. during, atB. at, during C. at, atD. during, during

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    Some animals sleep in winter because the weather can be very cold and it is difficult for them to find food. They can sleep for a long time. This kind of winter sleep is called “hibernation”.

    If an animal moves about a lot, it needs food. Hibernating animals do not need to eat much because they are not moving about. Their hearts very slowly and they also breathe slowly. They find a place out of danger. Their body fat keeps them alive and warm.

    Some animals Such as bears, may wake up from their hibernation on warm winter days and then quickly go back to sleep again when they see the snow is still thick on the ground. When the weather becomes warmer. in spring, the animals start to wake up and look for food.

    1. Some animals hibernate in winter because________.

    A. they feel cold

    B. it isn't easy for them to find something to eat

    C. they are weak

    D. both A and B

    2. If an animal moves about a lot, it needs________.

    A. the sunshine

    B. winter sleep

    C. food

    D. water

    3. Hibernating animals don't have to eat much because________ keeps them alive and warm.

    A. the sunshine

    B. their body fat

    C. bad weather

    D. their hearts

    4. Some animals may________ when they find the snow is stll thick on the ground.

    A. eat some food

    B. wake up on warm winter days

    C. quickly go back to sleep

    D. both B and C

    5. The word“hibernation”means________ in Chinese.

    A. 冬眠

    B. 垒窝

    C. 休眠

    D. 迁徙

     

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    North American back bears are shy animals. They are fearful by nature, and will usuallyrun away if they see or hear people. Because of this, it can be difficult for scientists to learnabout these animals.
    In order to study black bears, researchers from New Jersey, USA, catch bears and usedrugs to help them go to sleep. Researchers then work out the size and the weight of the bear,take blood to test for diseases, remove a tooth and take it to the lab to find out its age. Fromthese studies,researchers want to find out how many bears live in New Jersey, how long theylive, and how many babies theyproduce.
    But in Minnesota, USA, researchers study bears that are completely awake. The bears knowthe researchers' voices and they are not afraid of die research team. With the help of a few grapes
    to keep the bears busy, researchers can touch them to check their hearts, look at their teeth, and do other jobs.Researchers can also walk or sit with bears for hours and make videos to learn about their everyday lives.
    In both places, the main purpose is the same—to make sure there is a healthy population of black bears. But theresearch methods and the kinds of information that researchers, are able to collect are quite different.

    小题1:In the first paragraph, we can learn that North American black bears are _______.
    A．shy and fearful animalsB．not found today
    C．well known to scientists D．not afraid of people
    小题2:The word "remove" in the second paragraph probably means _____ in Chinese.
    A．拔下B．移植C．清洗D．修补
    小题3:Which of the following may NOT be included in the New Jersey studies on bears?
    A．The age.
    B．The way of their communication.
    C．The weight.
    D．The number of babies they produce.
    小题4:In the Minnesota studies, researchers _____.
    A．can never get close to the bears
    B．study the bears while they are asleep
    C．use grapes to make the bears full
    D．learn a lot about the bears' everyday lives
    小题5:What do the two studies have in common?
    A．Research places.B．The main purpose.
    C．Research methods. D．Collected information.

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    　　In the fall, bears eat as much food as they can. So do chipmunks（花粟鼠）and some other animals. They all grow very fat.

    　　Then these animals look for a warm place away from the cold. They sleep there all winter. They do not have to wake up to eat. They use their own fat for food.

    　　At last, spring comes. The animals leave their winter beds. Their long sleep is over.

    (1) This story tells about animals that________.

    [　　]

    A．sleep all winter

    B．eat food in winter

    C．like caves

    D．keep waking up in winter

    (2) Animals that sleep all winter use their own ________ for food.

    [　　]

    A．fat

    B．homes

    C．fur

    D．water

    (3) You can guess from the story that these animals like the spring because it is________.

    [　　]

    A．longer

    B．colder

    C．warmer

    D．hotter

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