2009年12月大学英语四级考试模拟试题(三)

　　A number of recent studies have emphasized the importance of exercise in reducing pain and maintaining function in people with osteoarthritis. Weight reduction is another key component of treatment. Shoe inserts and knee braces can also relieve knee pain caused by osteoarthritis. Although basic pain medications can help, non-steroidal anti-inflammatory drugs such as ibuprofen (布洛芬，一种抗炎、镇痛药) are more effective in relieving pain. However, these drugs carry the risk of kidney damage, high blood pressure, fluid retention and stomach bleeding. Glucosamine sulfate (氨基葡萄糖硫酸盐) is a component of normal joint cartilage. Recent studies have shown that 1,500 mg per day of this medication, available without a prescription, can decrease pain and improve function for patients with osteoarthritis of the knee.

　　21. According to the passage, osteoarthritis ________.

　　A) is inevitably caused by wear and tear due to aging

　　B) is an active process in which cartilage is damaged abruptly

　　C) is caused by damaged cartilage that the body cannot properly repair

　　D) is caused by cells within the cartilage that may release mediators

　　22. According to this passage, which of the following won’t lead to osteoarthritis?

　　A) Vigorous contact sports. B) Repetitive activities.

　　C) Going on a diet. D) Injury to a joint.

　　23. According to this passage, which of the following is NOT a possible supplementary treatment for osteoarthritis?

　　A) Losing weight. B) Doing exercise.

　　C) Using shoe inserts. D) Taking surgeries.

　　24. Which of the following is the best title for this passage?

　　A) A New Insight into Osteoarthritis

　　B) A New Symptom of Osteoarthritis

　　C) Mysterious Effects of Exercise on Osteoarthritis

　　D) New Categories of Osteoarthritis