题目内容

短文改错(共10小题,满分5分)

In order to go diving, you need some equipments.

First divers carry their backs a metal bottle, which

is filled of water. There’s enough air in it to

last about 40 minutes. Next, divers carry heavy metal

weights in a belt around its bodies. 

With these heavy weights they would float to the

surface.  You see, there are a lot of air in their

air bottles, and this will bring them up to the  

surface if they didn’t have any more weights. 

Mostly divers don’t go very deep.

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