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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 seas. Nature has a great water system. Rainwater finds its way to rivers, fresh water joins the salt water of the sea.
Here at the mouth of a river there is much important plant and animal life. But pollution destroys this life. We have to clean our rivers. Man has to work with nature, not against it.
(1). Water is like ________.
A. living things
B. blood
C. rain
D. life
(2). _____ is in every living thing.
A. The
B. Water
C. Salt
D. Air
(3). The mouth of a river is near _______.
A. the sea
B. a lake
C. a mountain
D. a valley
(4). There is much plant and animal life at the _______ of a river.
A. head
B. top
C. mouth
D. foot
(5). We have to ______ our rivers.
A. find
B. use
C. pollute
D. clean