Years ago, doctors often said that pain was a normal part of life. In particular, when older patients 1 of pain, they were told it was a natural part of aging and they would have to learn to live with it. Times have changed. Today, we take pain 2 . Indeed, pain is now considered the fifth vital, as important as blood pressure, temperature, breathing rate and pulse in 3 a person’s well-being. We know that chronic ( 慢性的 ) pain can disrupt a person’s life, causing problems that 4 from missed work to depression. That's why a growing number of hospitals now depend upon physicians who 5 in pain medicine. Not only do we evaluate the cause of the pain, which can help us treat the pain better, but we also help provide comprehensive therapy( 综合疗法 ) for depression and other psychological and social 6 related to chronic pain. Such comprehensive therapy often 7 the work of social workers, psychiatrists ( 心理医生) and psychologists, as well as specialists in pain medicine. This modern 8 for pain management has led to a wealth of innovative treatments which are more effective and with fewer side effects than ever before. Decades ago, there were only a 9 number of drugs available, and many of them caused 10 side effects in older people, including dizziness and fatigue. This created a double-edged sword: the medications helped relieve the pain but caused other problems that could be worse than the pain itself. A. result B. involves C. significant D. range E. relieved F. issues G. seriously H. magnificent I. determining J. limited K. gravely L. complained M. respect N. prompting O. specialize