读课文《自己试一试》,根据拼音写词语。
金鱼身上有很多(lín)____片,它张开鳞片,把水(jiā)____在鳞片里面了。
用所给词的适当形式填空
(1)He came back home early____(cook)supper for his son.
(2)What about____(play)football after class?
(3)Do you like____(Europe)modern music?
(4)The Smiths____(be)here in two minutes.
(5)We all know a Chinese soldier____(call)Lei Feng.
读“东南亚地图”,完成下列问题:
我国拟设计建造的长江三峡电站,估计总装机容量将达16780000千瓦,用科学记数法表示总装机容量是____千瓦 .
下列自然现象中,可以用“扩散”解释的是( )