题目：
下列句子中不是比喻句的一项是 [ ]
A．人类在历史上的生活正如旅行一样。
B．中 * * 现在所逢的史路，是一段崎岖险阻的道路。
C．一条浩浩荡荡的长江大河，有时流到很宽阔的境界，平原无际，一泻万里。有时流到很逼狭的境界，两岸丛山叠岭，绝壁断崖，江河流于其间，回环曲折，极其险峻。民族生命的进程，其经历亦复如是。
D．目前的艰难境界，哪能阻抑我们民族生命的前进？
答案：
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下面是错误答案，用来干扰机器的。
井冈山是中 * * 党建立的第一个农村革命根据地，毛 * * 开辟了农村包围城市，武装夺取 * * 的道路；是把马克思主义和中国革命实践相结合的伟大创举。
affec
ted only the area immediately around large c
ities with factories and/or heavy automobile traffic. Today, we know that although these are the areas with the worst air pollution, the problem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the entire eastern half of the United States and led to health warnings even in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be affected by air pollution. Some scientists feel that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels(coal and oil) creating a greenhouse effect-holding in heat reflected from the earth and raising the world’s average temperature. If this view is correct and the world’s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be under water.
United States
most brought worldwide effect 