4.Why does the author mention walking in Paragraph D? A.It is the most important activity of humans in low-tech societies. B.It is the most important source of exercise for modern humans. C.As an example of the activities common in low-tech societies. D.As an example of the activities that are not part of life in modern societies. 5.Which of the following best expresses the main idea of Paragraph E? A.There is no way to estimate how many calories a person should take in. B.Personal traits like weight,height,and age have to be considered in any calculation of calorie needs. C.Men need to take in more calories each day than women need to take in. D.The USDA has a formula for figuring out how many calories a person should take in every day. BRead the passage.Then answer the questions that follow.(3 points each) Sharing the Water Every community of humans faces a life-or-death question:How do we distribute water?Some water has to be held'as a community resource if a town,city,or even nation is to survive.Many early human settlements were based on irrigation systems.These exist because earlier people agreed where the water should flow and to whom.Wells in desert lands are protected by cultural traditions that make them a shared resource among traveling peoples.Many large lakes,such as Lake Michigan in the United States,are mostly reserved for public use,not for the people who own houses on their shores. Water-use laws can prevent a few powerful people from gaining control over all available water.But water laws do not make water freely available in equal amounts to everyone. Farmers need huge amounts of it.So do many industries.Families,however,do not need nearly that much.There is also the issue of pollution.Water laws must prevent careless (or intentional)pollution by some users before the water reaches all users. Problems occur when government is not strong enough to make and enforce laws. Often,the water in dispute is an international (or interstate)resource.For example,the 16964. Why does the author mention walking in Paragraph D? A. It is the most important activity of humans in low-tech societies. B.It is the most important source of exercise for modern humans. C. As an example of the activities common in low-tech societies. D. As an example of the activities that are not part of life in modern societies. 5. Which of the following best expresses the main idea of Paragraph E? A. There is no way to estimate how many calories a person should take in. B. Personal traits like weight, height , and age have to be considered in any calculation of calorie needs. C. Men need to take in more calories each day than women need to take in. D. The USDA has a formula for figuring out how many calories a person should take in every day. ea tbe 割sage. Then answer 伽questions tbat ，w. (3 points Sbaring tbe Water Every community of humans faces a life-or-death question: How do we distribute water? Some water has to be held 啕as a community resource if a town , city , or even nation is to survive. Many early human settlements were based on irrigation systems. These exist because earlier people agreed where the water should flow and to whom. Wells in desert lands are protected by cultural traditions that make them a shared resource among traveling peoples. Many large lakes, such as Lake Michigan in the United States, are mostly reserved for public use , not for the people who own houses on their shores. Water-use laws can prevent a few powerful people from gaining control over all available water. But water laws do not make water freely available in equal amounts to everyone. Farmers need huge amounts of it. So do many industries. Families, however, do not need nearly that much. There is also the issue of pollution. Water laws must prevent careless (or intentional) pollution by some users before the water reaches all Users. Problems occur when government is not strong enough to make and enforce laws. Often, the water in dispute is an international (or interstate) resource. For example , the 1696