答案:B put up意为“张贴;提出”;pick up意为“捡起;习得”;make up意为“组成;编造;化妆”;turn up意为“调大;出现”。与名词skill搭配,结合短文内容可知此处表示“自然地习得这些技能”,故B项正确。
Ⅳ.阅读理解
(2017·临沂高三二模)
There was one thought that air pollution affected only the area immediately around large cities with factories and heavy traffic. At present, we realize that although these are the areas with the worst air pollution, the problem is really worldwide. On Several occasions over the past decade, a heavy cloud of air pollution has covered the east of the United States and brought health warnings in distant areas away from any industrial cities. In fact, the very climate of the entire earth may be infected by air pollution. Some scientists consider that the increasing concentration of carbon dioxide in the air resulting in a “greenhouse effect”—keeping heat reflected from the view is correct and 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 in water.
Another view, less widely held, is that increasing particular matter in the atmosphere is blocking sunlight and lowering the earth's temperature—a result that would be equally disastrous. A drop of just a few degrees could create something close to a new ice age, and would make agriculture difficult or impossible in many of our top farming areas. Today we do not know for sure that either of these conditions will happen. Perhaps, if we are lucky enough, the two tendencies will offset each other and the world's temperature will stay about the same as it is now. Driven by economic profits, people ignore the damage on our environment caused by the “advanced civilization”. Maybe the air pollution is the price the human beings have to pay for their development. But is it really worthwhile?
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