2. 外语
  3. Americans this year will swallow 15,000 tons of aspirin( 阿司匹林), one of safest and most effective drugs invented by man. The most

Americans this year will swallow 15,000 tons of aspirin( 阿司匹林), one of safest and most effective drugs invented by man. The most

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问题     Americans this year will swallow 15,000 tons of aspirin( 阿司匹林), one of safest and most effective drugs invented by man. The most popular medicines in the world today, it is an effective pain reliever. Its bad effects are relatively mild, and it is【B1】.
    For millions of people suffered from arthritis(关节炎) ,it is the【B2】thing that works. Aspirin, in【B3】, is truly the 20th-century wonder drug. It is also the second largest suicide drug and is the【B4】cause of poisoning among children. It has【B5】effects that, although relatively mild, are largely【B6】among users.
    Although aspirin was first【B7】by German company in 1899, it has been【B8】much longer than that. Hippocrates, in ancient Greece, understood the【B9】value of the leaves and tree bark which today are known to【B10】salicylates(水酸盐) ,the chemical in aspirin. During the 19th century there was a great number of experimentation in Europe【B11】this chemical, and it led in the【B12】of aspirin. By 1915, aspirin tablets were【B13】in the United States.
    A small【B14】of aspirin(two five-grain tablets)【B15】pain and inflammation(炎症). It also reduces down fever by【B16】with some of the body’ s reactions.【B17】aspirin seems to allow down the formation of the acids【B18】in pain and the complex chemical reactions【B19】cause fever. The chemistry of these【B20】is not fully understood, and the slowing effect of aspirin is well know.

选项 A、pricy
B、dear
C、expensive
D、cheap
答案D
解析 语意辨析。A、B、C都指“昂贵的”，D意为“便宜的”。从第一段的内容看，D是最合适的选项。
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