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All penguins (企鵝) swim in cold waters and so need a good layer of insulation (隔離), some species come ashore in hot places.Humboldt penguins,for example,nest in arid hot - 40°C, deserts on the west coast of South America, while others survive the lowest temperatures of any animals.Male Emperor penguins,as we know, spend the Antarctic winters incubating eggs in temperatures that can fall below -70°C. The insulation is provided in layers, under the skin is a thick layer of fat, then there is a layer of downy feathers that trap air, and finally another layer of waterproof feathers that keep the cold water away from the skin. With all this insulation penguins have no problem keeping warm at temperatures down to about -10°C - although they have special adaptations of the circulatory system to keep their feet from freezing and to prevent much heat loss through the feet that are on the ice. At lower temperatures penguins have to huddle (蜷縮) together to keep warm. In such huddles the penguins gradually move from the hot interior to the cold outside so that every penguin has his turn in the middle and on the outside.
In hot climates, penguins suffer greatly from overheating. They use several strategies to lose heat. They puff up their feathers so that air can circulate to their skin; they hold their flippers(腳蹼)out from their bodies and pump hot blood to them so that they can act as radiators; they open their mouths and breathe to lose heat from their hot breath; and those species that live in hot climates also have several bare patches of skin around the eyes and feet, they send blood to these bare patches when they are hot - you can recognize a hot penguin since it will have pink eye patches and pink patches on its feet.
77. Which of the following are the ways for penguins to keep warm?
a. staying together in good social order 
b. several layers as radiators
c. a special circulatory system                    d. waterproof feathers
e. sending blood to bare patches
f. always staying in the middle
A. a, b, c                    B. a, c, d                    C. b, c, e                    D. c, d, f
78. The insulation consists of _______ layers.                                       
A. two                        B. three                      C. four                       D. five
79. The underlined "puff up" in the second paragraph can be replaced by ______.
A. breathe deeply         B. blow up                 C. hold tight               D. spread out
80. The passage mainly tells us ______.
A. how penguins stay warm in cold places       B. that penguins are a clever animal
C. how penguins keep their temperature          D. why penguins can live a safe life


【小題1】B
【小題2】B
【小題3】D
【小題4】C

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【小題3】What do you notice about the views presented in the passage?
A.They are groundless.B.They are factual.
C.They are descriptive.D.They are conflicting.
【小題4】What does the underlined word (final line) probably mean?
A.Later on.B.Calmly.C.Separately.D.In the same place.

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【小題1】According to the passage, what overall message is presented?

A.No firm conclusions are drawn.
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C.Penguin reduction is closed related to tourist behavior.
D.Tourists are not responsible for the fall in penguin numbers.
【小題2】Which ONE argument of the following is stated in the passage?
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B.Tour operators should encourage tourists to avoid Antarctica.
C.Not all penguins behave in the same way.
D.Penguins need better protection from tourists.
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A.They are groundless.
B.They are factual.
C.They are descriptive.
D.They are conflicting.
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A.when the female penguins return from the sea

B.just by hearing in the darkness

C.each time they see the lovely females

D.after they have had their own grounds

2.Male penguins fight when ______.

A.they choose their wives

B.they see a chick left alone

C.they want to get something to eat

D.they walk through their neighbors’ ground

3.From the passage we know that ______.

A.penguins live a hard life

B.penguins live in pairs

C.penguins will fight if one walks through others’ ground without permission

D.each penguin has a little piece of ground of its own

4.The penguins choose their wives in the dark. We can infer that ______.

A.penguins like nights very much

B.there is no daytime in that place at all

C.the weather is cloudy and rainy all the year around

D.the sun can’t shine there for nearly half a year every year

5.Which of the following is NOT true?

A.Female penguins take care of the eggs.

B.Female penguins often have their new husbands.

C.Male penguins use their ears to choose wives.

D.Male penguins don’t move when they take care of eggs,even though the wind often blows strongly.

 

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