题目内容

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Estuaries are also important because they 1 nutrients and pollutants from water coming 2 sources, thus cleaning our water. Unfortunately, this function also makes estuaries very 3 to environmental pollution. Since estuaries 4 animals and plants from storms and floods and 5 erosion. Protecting them is very important. Finally, estuaries 6 both recreation and 7 for human beings. Most of us enjoy fishing, swimming and having 8 on the beach, and scientists and students have 9 opportunities to study a variety of life in the habitat. Estuaries also 10 to the economy through tourism and fishing.

答案:
解析:

1.absorb;2.inland;3.sensitive;4.protect;5.prevent;6.provide;7.education;8.fun;9.endless;10.contribute


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