摘要：(A) 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. Rainwater finds its way to streams and rivers. Rivers lead to the oceans. At the mouths of the rivers, fresh waterjoins the salt water of the oceans. Here at the mouth of a river there is much important plant and animal life. Pollution destroys 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.

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