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最佳答案：As we all know,water is essential in our daily life.We drink water every day,we
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最佳答案：The Importance of WaterAs we all know, plants and animals need water. So do the
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最佳答案：Water is very important to the human beings.But now many rivers and lakes are po
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最佳答案：Water is the basic source of life.There would be no life without water.★ More an
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最佳答案：1给同学看地球干涸的图片 2让同学们意识到水是珍贵的资源 3写节水标语 忘采纳哟
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最佳答案：解题思路：把原来马桶中水的体积（即马桶的容积）看成单位“1”，现在的用水量比原来节约的部分就是就是矿泉水瓶的体积，即5立方分米的[1/3]，用乘法求出即可．5×