Why do more middle-aged adults have to take care of their ageing parents
Be cause people are living （）.
| National Parks have more and more
visitors each year. In the last ten years the number of campers using the camp
sites has more than doubled. Camping as a family vacation has suddenly
become extremely popular in America. It is a cheap way to travel; its simple
pleasures are a pleasant change from hectic urban life; and it can be enjoyed by
children of all ages. In car trunks or in racks on top of cars, families load a tent, sleeping bags, inflatable mattresses, cooking pans and eating utensils, and an ice chest for storing food. When they arrive at a camping ground they find a cleared space in which to pitch their tent, a fireplace for cooking, and usually a picnic table and benches--water and firewood nearby. By evening they are settled under the stars, the campsite around them dotted with lights from cooking fires and lanterns hung from trees. Va A. Tile public rooms of the White House. B. The great Lincoln Monument. C. The Statue of Liberty. D. Exhibits of the native people of America. 我来回答: 提交
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