综合写作：
Dental amalgam(银汞合金)用来做补牙材料很多年，是水银跟其他金属的合金。该不该禁止?
阅读：应该禁止
1. 水银对人的身体有害，如果进入血液，会严重破坏神经系统;
2. 水银对环境有害，进入下水道流入河流，会造成重金属污染;
3. 除了水银还有很多替代材料可以使用，比如金子。听力反驳
1. 少量水银被人体吸收了根本没什么危害，那些导致损害健康的人是因为对水银过敏，而这个概率非常小
2. 排水系统可以进行过滤，不会造成污染;
3. 水银可以让牙齿更持久，而且替代品比如金子等很贵。
独立写作
Which one is the most important factor to help you work productively? Having an environment which is free of noise and distractions Knowing that you will receive a reward
Doing something you are interested in
Nowadays, the heated debate on how to raise employees’ work enthusiasm and improve their work efficiency has aroused the public‘s concern. Among the three given options, reminding employees of rewarding, providing a tranquil work surrounding and assigning them work that they truly fancy, I am in favor of quiet environment as it affects both workers’ state of mind and health condition, which decides their work efficiency both directly and indirectly.
To begin with, only if an employee fully concentrates on a task can the work efficiency be improved, which is directly affected by the work environment surrounding him or her. No matter whether it is sound from automobile engine and horns, drilling machines down or upstairs, or the loud chatting and gossiping from colleagues around, when a quiet work environment disappears, hardly can an employee focus on what he or she is working on, or this even disrupts the whole process of work a person planed. Imagine
when an accountant is busy completing an annual report of the company and immersing himself in a series of capitals on an Excel table, even a loud laughter would distract his or her thinking and discontinue the work.
In addition, a quiet environment affects employees’ mood and health, which indirectly influences their productivity. It is not hard to understand that only if people feel at ease can they be more efficient doing what they are obliged to. It is proven by science that different levels of noise pose corresponding threats on people’s physical conditions. For example, people would suffer from headache and sleep problems when surrounded with noise of 80-85 db and raged or tired easily if the noise rises up to 90-100db. What is worse, staying in the environment where one is exposed to noise of 100-120db would cause insomnia, memory deterioration and so forth. Thus, how could employees be expected to work efficiently with physical and mental health both being threatening by exterior noise in the work environment?
Admittedly, the other two options are seemingly effective. Rewarding can motivate employees and people are inclined to perform well in what they truly enjoy. However, on the one hand, rewarding is not a permanent or fundamental approach. Namely, employees are more likely to be greedy and dissatisfied with the rewarding soon and thus, they may ask for rising the rewarding, which undoubtedly adds extra costs for a company. On the other hand, even though a person does something he or she is interested in, a tranquil work environment is also the basic premise if he or she is supposed to accomplish the task quickly with high quality.
To conclude, it is a wise decision for employers to create a quiet environment for employees in consideration of improving their work efficiency. This is an effective and long-lasting approach that guarantees both employees’ concentration on work and their health condition.
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