8．
A desert is a very dry land where there is hardly any rain．In the day，it can be so hot that you could fry an egg on the ground．But during the night it is sometimes so cold that water would turn into ice．
Many deserts are covered in land．But some have mountains，rocks that have dried up in the heat．The Great American Desert has cliffs（懸崖） that have been made into amazing and beautiful shapes by the wind．The Sahara Desert in Africa is mostly sand．The Australian Desert has red sand．
Sometimes it does not rain for a whole year in the desert．But there is water deep under the ground and some plants have roots that go very deep to find it．Other plants have roots that spread out（延伸） a long way so they can suck up the rain as soon as it falls．
One desert plant is the cactus，which has long，spreading roots，the cactus stores water inside its hard skin．This skin protects it from heat and cold．
Camels are a bit like cactus plants!They store water too-inside their bodies．They have special fur which protects them from the sun during the day and keeps them warm at night．
Some other animals live in deserts，too．They have to be very good at seeing and hearing because most of them only comes out at night．This is why many desert animals have extra big eyes or ears．
A desert fox has bigger ears than a normal fox．A gerbil（沙鼠） has huge eyes，so that it can see at night．It says cool in the day by staying underground，like most desert animals．
Some people live in the desert but they always make their homes near an oasis（綠洲）．An oasis is where water comes from an underground river．Near an oasis，people can grow lots of plants and keep animals．
Life is hard in the desert，for people，animals and plants．But desert people like to live there．
81．From the first paragraph of the passage we know thatB in the desert．
A．it's sandy and windy all the year round．
B．it's too hot in the day but too cold at night．
C．there's no water deep under the ground．
D．an egg can be fried on the ground at night．
82．In Paragraph3，the underlined phrases"suck up"meanB．
A．圍堵
B．吸收
C．討好
D．釋放
83．Why does many desert animals have extra big eyes or ears？A
A．Because they need to see and hear well at night．
B．Because the sunlight is too strong in the day．
C．Because big eyes and ears look very beautiful．
D．Because there are some special animals in the desert．
84．Which of the following is NOT true according to the passage？C
A．The desert is very dry because there is hardly any rain．
B．The roots of some desert plants go very long and deep to find water．
C．Most desert animals stay cool in the day by drinking much water．
D．Desert people can grow plants and keep animals because of oasises near their homes．
85．Which of the following is TRUE according to the passage？D
A．All of the deserts are covered in sand．
B．Camels have special fur to store water．
C．People in the desert usually fry eggs on the ground．
D．Desert people like to live in the desert though life is hard．
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