题目内容
7.Urbanization is a factor that causes water shortage.
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8.Raising public awareness of the water problem is the first thing you can do toward its solution.
9.Desalination is not necessary because the 3% fresh water is enough for all humans and animals.
10.There is a high chance that people who have easy access to water do not think water is a problem.
备用信用证的开证人与受益人两者的权利义务是由备用信用证条款规定来决定。
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