问题
选择题
初春育秧，为防霜冻，农民傍晚要向秧田注水，白天再将水放掉。其物理原理是 [ ]
A.水蒸发吸热能制冷
B.4℃水的密度最大
C.水有较大的比热容
D.水的导热性能较差
答案
答案：C
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初春育秧，为防霜冻，农民傍晚要向秧田注水，白天再将水放掉。其物理原理是 [ ]
A.水蒸发吸热能制冷
B.4℃水的密度最大
C.水有较大的比热容
D.水的导热性能较差
答案：C
任务型阅读（5分） 下面是五段电视节目内容的解说词。请根据五段内容，在A--E中分别选择相应的电视节目名称。 小题1:People might grow plants and vegetables in the sea in about 50 years. 小题2:The Lost World is an exciting American film.people,especially school students ,may like it better in free time. 小题3:Even if you could buy the world,you could not buy a happy family,good friends or knowledge. 小题4:For parents with children,an important problem is getting the children away from the television to do their homework. 小题5:When you need help for your homework, go to the library. You may find magazines, newspapers and big dictionaries there. They can always help you.
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