Coffee can be considered one of nature's greatest gifts. It gives mental and emotional【C1】

______ without harmful side effects, and it【C2】______ a wealth of nutrients. Yet, when most people drink coffee, they are not thinking that the beverage is【C3】______ their health. In fact, some may even feel a little guilty,【C4】______ some believe coffee isn't good for you at all.

Well, coffee, like anything else, can cause problems if too much is【C5】______ . Moderate consumption of coffee【C6】______ your body with a wealth of antioxidants. These substances are responsible【C7】______ eliminating free radicals. They are the chemical byproducts produced any time your body does something. A small numi6er of them can help serve【C8】______ a buffer against negative elements, if they aren't【C9】______ in check, they can cause health problems. Antioxidants ensure that this doesn't happen.

The psychological effects of caffeine cannot be【C10】______ either. Not only does caffeine make you more 【C11】______ , but it can actually affect your mood. If you were feeling【C12】______ or overwhelmed, a nice cup of coffee could change your【C13】______ . The stack of work that seemed impossible before isn't even a

problem now.

【C14】______ , caffeine helps stimulate creativity as it speeds up the body's functioning. That's why coffee is often【C15】______ with writers and other intellectual professions. Other drags【C16】______ to make people dumber. Consider what happens when people get high off of crack or when they get drank off of alcohol. They won't be【C17】______ at all. But with coffee, an individual gets a creative boost【C18】______ still helping their bodies.

In conclusion, don't feel bad when you've brewing your morning cup of coffee.【C19】______ a can of soda or a shot of alcohol, coffee will make you feel wonderful while keeping you healthy. Just remember, you do have to consume the beverage in【C20】______ .

【C1】

A．clean

B．clarity

C．brightness

D．clear