题目：
　　12 In general ,people are living longer now. Discuss the causes of this phenomenon. Use specific reasons and details to develop your essay.
　　范文：
　　Today people are living to be much older than ever before. Some of the main reasons for this are the improved health care and better nutrition available to everyone.
　　Medical care is more available to people. Although not everyone can get the best heath care, everyone can get basic heath care and advice. When people are seriously ill, they can go to a public hospital and be taken care of. Years ago, health care wasn't available to everyone. Some people didn't live near a doctor or a hospital, and others couldn't pay for the care they needed. They made do with herbal medicines or folk remedies. Of course, some of these worked, but not for the more serious diseases.
　　The quality of medical care has improved. That”s also a factor in longevity. Doctors know more now about what causes disease and how to care it ,Years ago, doctors only knew about the most basic diseases and cures. Medicine was not very advanced. You could die from something as simple as an infection from a cut. Now we have antibiotics and other medicines to help cure infections.
　　People are also living longer now because of better nutrition. We 're eating better and more healthfully than we used to .That's reduced the number of people with heart disease and cancer. We try to eat low-fat foods and eat more vegetable and fruits ,which are now available year-round.
　　Improved medical care and healthy eating habits has greatly expanded our life spans. What we need to do now is make sure that everyone in the world has these benefits.

重点单词 查看全部解释
antibiotics [.æntibai'ɔtiks] 想一想再看
n. 抗生素，抗生学

longevity [lɔn'dʒeviti] 想一想再看
n. 长寿
联想记忆 X 单词longevity 联想记忆：
long长，ev时间，ity：活得时间长－长寿
infection [in'fekʃən] 想一想再看
n. 传染，影响，传染病
联想记忆 X 单词infection 联想记忆：
infect+ion→传染；感化
specific [spi'sifik] 想一想再看
adj. 特殊的，明确的，具有特效的
n. 特
联想记忆 X 单词specific 联想记忆：
speci外观+fic带来→带来外观的→具体的
nutrition [nju:'triʃən] 想一想再看
n. 营养

factor ['fæktə] 想一想再看
n. 因素，因子
vt. 把 … 因素包括
联想记忆 X 单词factor 联想记忆：
fact做，制作+or→促使人做的东西→要素；动力
phenomenon [fi'nɔminən] 想一想再看
n. 现象，迹象，(稀有)事件
联想记忆 X 单词phenomenon 联想记忆：
phen显示+omen预兆+on→显示预兆→现象
quality ['kwɔliti] 想一想再看
n. 品质，特质，才能
adj. 高品质的

available [ə'veiləbl] 想一想再看
adj. 可用的，可得到的，有用的，有效的
联想记忆 X 单词available 联想记忆：
avail效用。参：availability（n 可用性，实用性）
advanced [əd'vɑ:nst] 想一想再看
adj. 高级的，先进的