6.　　　　 Because water is polar, it can break down both solids and gases.

因为水是极性的，因此它能分解固体和气体。

5.　　　　 The two hydrogen atoms form a polar molecule, that is, one with a slightly positive end and one with a slightly negative end.

两个氢原子形成一个极性微粒，这就是说，一个极稍微偏正，另一个极稍微偏负。

4.　　　　 What is it that makes the ocean such a great place to live?

是什么使海洋有如此大的生存空间？

3.　　　　 Water is actually quite simple, but the way the water molecule is formed gives water its unique properties.

水实际上是很简单，但水分子的结构方式却赋予水独特的性质。

2.　　　　 Life in the oceans ranges from the tiniest plankton all the way up to giants like sharks and whales.

海洋里的生物从微小的浮游生物到巨大的动物，如鲨鱼和鲸鱼。

1.　　　　 Put one hand on the paper and turn the glass upside down.

把一只手放到纸上，把玻璃杯倒置过来。

15.　　 Although I knew how to create life, how to prepare a body for it with all its muscles and organs still remained a difficult job.

尽管我知道为何创造生命，但是如何为生命准备一个具有肌肉和各种器官的躯体仍然是一项艰巨失望工作。

Unit13 The water planet

14.　　 One of the phenomena that attracted my attention was the structure of the human body and any animal that was alive.

引起我注意的现象之一就是人体的结构和活着的动物。

13.　　 I found all that was taught at university very disappointing.

我发现大学里教的课程都令人失望。

12.　　 I read all the books I could find that threw light upon these matters.

我读了所有我能找到并能说明这些情况的书籍。