Water is the "life blood" of our earth.It is

Water is the "life blood"of our earth.Like air and sunshine,it is very important --living things.
A.for B.to C.of D.towards

阅读理解。

Water is the "life blood" of our earth. It is in every living thing. It is in the air. It runs through mountains and valleys. It forms lakes and oceans. Water is everywhere. Nature has a great water system (水系). Rainwater finds its way to streams (溪流) and rivers. Rivers lead to the oceans. At the mouths of the rivers, fresh water (淡水) joins the salt water of the oceans. Here at the mouth of a river there is much important plant and animal life. Pollution destroys (毁坏) this life, so we have to clean our streams and rivers. Man has to work with nature-not against it.

1. According to the reading, water is like _____.

A. blood B. rain C. life

2. The mouth of a river is near _____.

A. the oceans B. a stream C. the mountains

3. There is much plant and animal life at the _____.

A. head of a river B. mouth of a river C. body of a stream

4. The water in streams and rivers all comes from _____.

A. rain B. nature C. oceans

5. Which of the following statements is not true?

A. We can find water in our body. B. Blood can be found in every living thing. C. At the mouth of a river we can find many living things.

选词填空
Water is the"life blood"of our earth．Like air and sunshine,it is very important 31 living things．Without water,there can be 32 life on the earth．All animals and plants need water.Man also needs water．We need water to drink,to cook and to clean 33 ．It even 34 the greater part of our bodies． 　　Water is almost everywhere．Even in the 35 places of the world,there is water in the air．However．we can drink not seawater but fresh water．To make things even 36 ,people often 37 to keep the water clean．They throw rubbish into rivers,lakes or seas．So not all the fresh water is 38 for us to drink．We're short 39 water．Something must be 40 to stop this． ( )31．A．by B．to C．of D．towards ( )32．A．none B．not C．much D．no ( )33．A．himself B．our C．us D．ourselves ( )34．A．made of B．make C．makes up D．made in ( )35．A．driest B．wetter C．drier D．beautiful ( )36．A．best B．worse C．worst D．better ( )37．A．decide B．try C．fail D．take ( )38．A．clean enough B．enough clean C．enough good D．dirty enough ( )39．A．for B．in C．at D．of ( )40．A．do B．did C．doing D．done