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 Last Friday, I had an interview with Professor Yang,asking for advice on how to deal with the children who are addicted to computer games.

  Professor Yang holds the view that being ab?sorbed in computer games is extremely bad for children. Immediate measures should be taken to stop children from spending too much time on the computer. Firstly, the government should prevent Internet bars from accepting children. Secondly, the way of solving this problem is to give children as many choices as possible to spend their spare time. The activities should be interesting and varied enough that they will enable children to spend less time playing computer games. It is also important for parents to communicate with their children. Gradually with the help of parents£¬chil?dren will gain the ability to tell right from wrong.

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 Some desert animals can survive the summer heat and dryness because they are very unusual. The camel, for example, can experience and bear an increase in the temperature of its body and its blood of 9t without anything bad happening to it. In addition, it can drink a lot of water at one time;then store enough water in parts of its body to supply its needs for two weeks or more. The kangaroo rat,on the other hand,gets all the water it needs from water that it pro?duces when it breathes. However, most animals need to maintain a fairly constant body temper?ature,and will die if it rises more than 5^. Therefore, they need to find some way to stay away from the heat of the summer sun. Nor can many animals either store or produce water in their bodies, as the camel and kangaroo rat can. So they must find ways to keep their bodies from losing water because of the heat.

  Because very few desert animals can survive the high temperature of a typical summer day£¬ most of them are active only in the night. Only after the sun has set does the desert come fully to life. The night is relatively cool,and the darkness provides protection, not only from the sun,but also from other animals and from the birds. So the coming of darkness is the signal for the large majority of animals and insects to start again their search for water and food. When morn?ing comes£¬most of them seek shelter again£ºmany go underground;nearly all find some dark and cool place where they can keep away from the sun's heat.

  For many species of insects, living in the desert is easier than for animals. Like many des?ert plants£¬they have a waterproof skin which prevents water loss because of the high tempera?ture. In addition, some species spend all or most of their life below ground. Here,for most of the year at least, there is some moisture, and it is generally cooler than on the surface. In the case of ants£¬only adults leave the underground nests£¬and they do so only to gather food or to defend the nest against attack.

(   ) 1. Compared with other desert animals£¬the camel can bear      

A.     a very low body temperature

B.     only a little change in body temperature

C.     a big increase in body temperature

D.     a constant change in body temperature

(   ) 2. The kangaroo rat is different from other animals in that      

A.     it can produce water through breathing

B.     it can store water in parts of its body

C.     it can maintain different body temperatures

D.     it can drink a lot of water at a time

(   ) 3. Why is it easy for many species of insects to live in the desert?

A.     Because it is not difficult for them to survive there.

B.     Because they are not afraid of the heat.

C.     Because it is not difficult for them to find food there.

D.     Because they have a waterproof skin.

(   ) 4. Why is the desert full of activity in summer nights?

A.     Because it is cooler and safer for most animals.

B.     Because animals can find food in the dark.

C.     Because it is easy to find water at night.

D.     Because animals cannot sleep at night.

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