读一读，给下列句子排序，在括号里写阿拉伯数字即可。

____It's green.

____I like Nancy's home.

____Why?

____What colour is it?

____Do you like Nancy's home or Danny's home?

____Because' the dining room is so big. I like the colour too.

根据句意及汉语提示，填入适当单词完成下列句子。 
（1）There are many trees and ____(灌木从)in the garden.
（2）There are some ____ (抢劫者)in the building.
（3）People have different ____(能力).
（4）It's ____  (必要的)to give them clean water if you want them to be healthy.
（5）How ____ (可怕的) the traffic was!

世界大洋最深处是位于太平洋中的　____ 　世界上最长的山系是纵贯美洲大陆西部的　____ 　山系．

下列有关“用高倍镜观察叶绿体和线粒体”实验的叙述中，正确的是（   ）