21 EX In general ,people are living longer now. Discuss the causes of this phenomenon. Use specific reasons and details to develop your essay.

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.

22 Ex We all work or will work in our jobs with many different kinds of people, in your opinion ,what are some important characteristics of a co-worker (someone you work closely with)?Use reasons and specific example to explain why these characteristics are important.

We spend more time with our co-workers during a week than we do with our family, Thus, it’s important for our co-workers to be people we can get along with. I’ve worked in a lot of offices, and I've found there are certain characteristics that all good co-workers have in common.
A good co-worker is very cooperative, She does her best to get along with others.

She tries to keep her end of things flowing smoothly to help others in the office. She realizes that if one person doesn't get her work done, it can hold up everyone else. She has a positive attitude that creates a pleasant working environment.
A good co-worker is adaptable. She is not stubborn about changes in schedules or routines, and doesn't object to having her job description revised. That can make life miserable for everyone around her. A good co-worker is willing to change her schedule to accommodate another worker's emergency, She has no problem with new procedures and welcomes changes when they come.
A good co-worker is helpful. She pitches in when someone falls behind in his or her work. She’s willing to do whatever it takes to get the job done. She doesn't keep track of how often she has to finish another's work or take on extra work. Some co-workers do their own job, period. They have no sense of office community. They only want to do their work, get paid and go home.
A good co-worker is a sympathetic listener, and never uses what she learns against people. she doesn’t gossip. A bad co-worker uses negative rumors to take advantage of others.
Being a good co-worker isn't too hard, but some people just can't seem to manage it. Wouldn’t it be a wonderful world if everyone could?

考好托福 去美国留学啦！