写作素材：骑自行车的利弊.

　　The Pros and Cons of Bikes

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　　Benits:

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　　1. Fitness: Biking let you incorporate low stress aerobic exercise into your daily commute.

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　　2. Parking: Forget about parking headache. Riding a bicycle lets you park much closer to your destination than a car.

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　　3. The environment benits include reduced pollution and reduced resource consumption (less material, fuel, and infrastructure ).

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　　4. Bicycles increase mobility for those who don’t have access to motor transport (who don’t qualify to drive a car).

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　　5. Reduce energy consumption.

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　　6. One of the most positive impacts of bicycling is improved health.

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　　7. Moderate exercise such as bicycling can offer major health benits.

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　　8. Beyond physical health, bicycling helps to relieve; to fight off depression and anxiety; and to enhance your sense of well-being.

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　　9. It is also a lot more economical to ride a bike than to drive a car.

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　　The Cloning Technology

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　　1. Cloning is unnatural and not ethically correct.

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　　2. Cloning creates serious issues of identify and individuality and forces humans to consider the dinition of self.

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　　3. It leads to the psychological harms on cloned human children. One of those harms is the loss of identify, or sense of uniqueness and individuality.

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　　4. The strongest ethical argument against cloning is that it could lead to a new, unfamiliar type of family relationship.

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　　5. Another argument against cloning is that it would be available only to the wealthy and therore would increase social inequality.

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