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Offer suggestions or possible solutions to the problems of nature-unfriendly behavior.Lights or water taps are often left on in public places.

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Offer suggestions or possible solutions to the problems of nature-unfriendly behavior.Potentially toxic wastes such as used batteries are thrown away at random.

Offer suggestions or possible solutions to the problems of nature-unfriendly behavior.Littering and spitting are frequent occurrences in public places.

[音频]P1 After living in the 24-hour city of Las Vegas, Nevada for nearly ten years, my family and I decided to 1______. My daughter wanted a horse. My husband wanted 2_. My son wanted a dirt bike. I wanted our family to be more 3__.[音频]P2 None of us felt that this could be 4_ where we were living and we all agreed that a move to the country would be great for everyone.[音频]P3 Before long we set about looking for a home in Yucca, Arizona, a very small town of less than 1,000 people. It was while I was 5___ listings from our 6_ that I first learned of it. There was a home for sale there on 40 acres. When I called to inquire about the property, I was 7_ that there was no electricity 8 in the area. What? No electricity? I almost 9 the idea immediately.[音频]P4 The property was off the grid. It was not connected 10_ to any utilities — power, water or sewer. Power was supplied by a wind turbine and 11 _ . Water had to be12_ in and stored in two tanks located on the property. Forty acres would give us plenty of room for all of our animals and give my husband and son space to ride their ATVs. Besides, what better way is there to become more 13? After giving it some 14, we decided to put in an 15__ and moved in on Thanksgiving Day.

1大叶性肺炎铁锈色痰的产生是由于：

A. 痰内含血红蛋白
B. 痰内含红细胞
C. 痰内含含铁血黄素
D. 痰内含巨噬细胞
E. 痰内含纤维素