健忘，注意力不集中？多吃巧克力吧。

                                                                                          

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.

解析：选B。细节理解题。根据第一段最后一句Scientists looked at the effects of cocoa and cocoa-derived food (chocolate) and found that they have the potential to sustain cognitive abilities.可知科学家研究了可可粉和可可类食品(巧克力)的功效，发现它们有维持认知能力的潜能，故选B。

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

A Coffee.

B Flavanols.

C Chocolate.

D Coca cola.

解析：选B。细节理解题。根据第二段第一句The secret lies in flavanols(黄烷醇), which is good for your brain.可知这种功效的奥秘就在于黄烷醇，它对你的大脑有好处，故选B。

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.

解析：选C。细节理解题。根据第二段第三句Scientists found that participants showed improvements in memory after having cocoa flavanols. 可知科学家发现，在摄入可可黄烷醇之后，研究参与者的记忆力有所改善，故选C。

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

A Kids.

B Adults.

C Unhealthy people.

D Older populations.

解析：选D。细节理解题。根据第三段第一句In fact, the effects of cocoa flavanols were more easily seen in older populations, and particularly those who had already started to lose memory. 可知可可黄烷醇的功效更容易在老年人群身上体现出来，故选D。

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

A attention

B processing speed

C working memory

D tasty of chocolate

解析：选D。细节理解题。根据第三段第二句Cocoa flavanols improved attention, processing speed, and working memory. 可知，可可黄烷醇可以提高注意力、信息处理速度以及工作记忆力，故选D。