英语四级改错精练

　　Americans this year will swallow 15000 tons of
　aspirin, one of safest and most effective drugs 1.__________
　invented by man. The most popular medicines in the 2.__________
　world today, it is an effective pain reliever. Its bad
　effects are relatively mild, and it is cheap.

　For millions of people suffered from arthrities, 3.__________
　it is the only thing that works. Aspirin, in short, is
　truly the 20th-century 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 4.__________
　relatively mild, are largely unrecognized between users. 5.__________

　Although aspirin was first sold by Germam company
　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 6.__________
　contain salicylates, the chemical in aspirin. during the
　19th century, there was a great number of experimentation 7.__________
　in Europe with this chemical, and it led in the introduction 8.__________
　of aspirin. By 1915, aspirin tablets were available
　in the United States.

　A small quantity of aspirin(two five-grain tablets)
　relieves pain and inflammation. It also reduces down 9.__________
　fever by interfering with some of the body's reactions.
　Specifically, aspirin seems to slow down the formation
　of the acids involved in pain and the complex chemical
　reactions that cause fever. The chemistry of these acids
　is not fully understood, and the slowing effect of aspirin 10.__________
　is well known.

　参考答案　

　1. of ∧ safest → the
　2. medicines → medicine(or: drug)
　3. suffered → suffering
　4. if → though(or: although)
　5. between → among
　6. is → are
　7. number → deal(or: amount,quantity)
　8. in → to
　9. down → /
　10. and → but