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第四部分：阅读理解
阅读理解第一篇是理工B的第二篇 Why buy shade-grown coffee.
Why Buy Shade-Grown Coffee?
When people argue about whether coffee is good for health, they’re usually thinking of the health of the coffee drinker. Is it good for your heart? Does it increase blood pressure? Does it help you concentrate? However, coffee affects the health of the human population in other ways, too.
更正：36题答案A
阅读理解第二篇：
Soot (煤烟) and Snow：a Hot Combination
New research from NASA scientists suggests emissions of black soot alter the way sunlight reflects off snow. According to a computer simulation，black soot may be responsible for 25 percent of observed global warming over the past century.
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