If you were looking for a reason to have a bowl of Cocoa Krispies(可可脆米花) topped with chocolate milk each day, science has your back. Scientists looked at the effects of cocoa and cocoa-derived food (chocolate) and found that they have the potential to sustain cognitive abilities.
The secret lies in flavanols(黄烷醇), which is good for your brain. And chocolate is filled with the stuff. Scientists found that participants showed improvements in memory after having cocoa flavanols. The study also showed that, cocoa actually improved the cognitive abilities.
In fact, the effects of cocoa flavanols were more easily seen in older populations, and particularly those who had already started to lose memory. Cocoa flavanols improved attention, processing speed, and working memory. So maybe get your grandma a box of chocolate the next time you see her.

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1. From Paragraph 1, what’s the function(功能) of cocoa and cocoa-derived food?

A    To be a good dish.

B    To sustain cognitive abilities.

C    To increase the learning ability.

D    To make chocolate more delicious.

2. Which part of cocoa is good for your brain?

A    Coffee.

B    Flavanols.

C    Chocolate.

D    Coca cola.

3. What will happen after having cocoa flavanols?

A    Nothing will happen.

B    It will lead to disease.

C    Memory will be improved.

D    People will be more beautiful.

4. Which kind of people are more easily seen the effects of cocoa flavanols?

A    Kids.

B    Adults.

C    Unhealthy people.

D    Older populations.

5. From the last paragraph, cocoa flavanols can NOT improve ____.

A    attention

B    processing speed

C    working memory

D    tasty of chocolate