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2.指代關(guān)系的錯誤:這類錯誤主要指由于人稱代詞、物主代詞及指示代詞的誤用,導致指示不清、邏輯混亂,甚至前后矛盾。Americans this year will swallow 15000 tons of aspirin, 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 cheap. For millions of people suffered from arthritis, it is the only thing that works. Aspirin, in short, is truly the 20thcentury wonder drug. It is also the second largest suicide drug and is the leading cause of poisoning among children. it has side effects that, if relatively mild, are largely unrecognized between users. Although aspirin was first sold by Germam pany in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of the leaves and tree bark which today is known to contain salicylates, the chemical in aspirin. during the 19th century, there was a great number of experimentation in Europe with this chemical, and it led in the introduction of aspirin. By 1915, aspirin tablets were available in the United States. A small quantity of aspirin(two fivegrain tab