Unit 5 Travelling abroad 课前 10 分钟短文填空 Most of the life in the ocean can be found in the first zone， which begins at the and goes down about 200 metres
Because there is at this level，plants are able to grow
Marine such as dolphins，sharks，sea turtles and sea lions，and of course a of fish，live in the sunlit part of the ocean
It is difficult to from other animals in this area， but many species have adapted by dark on the top and light on the
This makes it difficult to see them the dark water below and the blue sky above sunlightanimalsvarietyhidebecomingbottomagainstsurface 漫画欣赏 画面描述 A tree is broken off by the strong wind，while the grass still stays as it is
Weak and small as the grass is，it can stand the strong wind
寓意理解 Some people look very strong，but they are easily defeated by diffi
