我国农业生产最主要的部门是：                             （　 　）

按要求写句子

①我的眼光被河心一个什么东西吸引住了。（改成把字句）

②羊皮筏子上，乘客那从容的神情，就如同坐在公共汽车上浏览窗外的景色。（用加下划线字造句）

③如果没有足够的勇气，就是连眼也不敢睁一睁的。（用加下划线字造句）

④艄公破浪前行。（扩句）

    Scientists say life will be very different in 2050.

    First，there will be no TV channels（频道）in 2050.People will choose a program from a computer and watch it on TV.In 2050，we will get information from the computers only.

    Second，water will be a big problem in 2050.In many places，people won't have water to drink.

    Third，cars will use new and clean fuels and they will go very fast.There will be a computer in every car.And the computers will control the cars and there won't be any accidents（事故）.