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Anyone with a passing interest in their health will be able to rattle__off a few of the major vitamins, and possibly take an educated guess at what they do. Vitamin C, found in oranges and other fruit and vegetables, is important for wound repair. And the much-talked-about ‘sunshine’ Vitamin D, produced by the skin in response to UV light, is essential for strong bones.

But Vitamin P? It might well have you scratching your head. And that's not surprising: the term was first coined in the 1930s to describe a small group of compounds that provide pigment(天然色素) to plants, and were believed to have health benefits. Fast-forward almost a century and these compounds are now better known as flavonoids.

Today, scientists have identified between 4,000 and 6,000 different kinds and we now know they are responsible for many of the flavors and smells of fruit and vegetables and also that they protect them from invaders such as pests and bacteria.

They are equally important nutrients for the body, helping maintain bones and teeth, and for the production of the protein collagen(胶原), which provides structure to blood vessels, muscles and skin.

They are also said to help the body deal with some of the key drivers of illness, including oxidation(氧化), a natural process by which the body's cells age and can become damaged and defective(有缺陷的). That means they could help to protect against chronic diseases including cancer and heart disease.

1.Which of the following best explains “rattle off” underlined in Paragraph 1?

A. Quickly say.    B. Quickly pass.

C. Quickly find.    D. Quickly take.

2.What do we know about Vitamin P?

A. We would scratch our head if we took it.

B. It was made into a coin in the 1930s.

C. People didn't think it beneficial in the past.

D. It refers to the compounds also called flavonoids.

3.How many functions of Vitamin P for humans are mentioned?

A. Four.    B. Three.

C. Two.    D. One.

4.How does Vitamin P help slow the aging process?

A. By dealing with oxidation.

B. By maintaining bones.

C. By strengthening muscle.

D. By protecting against chronic diseases.

 

1. A 2. D 3. B 4. A 【解析】 本文是一篇说明文。文章介绍维生素P以及它对人的作用。 1.词义猜测题。根据第一段中Anyone with a passing interest in their health will be able to rattle__off a few of the major vitamins, and possibly take an educated guess at what they do. 任何对自己的健康稍有兴趣的人都能快速地摄取一些主要的维生素,并可能对他们的行为做出有根据的猜测。由此推知划线词的意思是“迅速地说出”,故选A。 2.细节理解题。根据第二段最后一句Fast-forward almost a century and these compounds are now better known as flavonoids.可知,关于维生素P我们知道它指的是也叫类黄酮的化合物。故选D。 3.推理判断题。根据第四段中They are equally important nutrients for the body, helping maintain bones and teeth, and for the production of the protein collagen(胶原), which provides structure to blood vessels, muscles and skin.和第五段第一句They are also said to help the body deal with some of the key drivers of illness, including oxidation(氧化),可知,维生素P对人体3个作用。故选B。 4.推理判断题。根据最后一段中They are also said to help the body deal with some of the key drivers of illness, including oxidation(氧化), a natural process by which the body's cells age and can become damaged and defective(有缺陷的).可知,维生素P通过氧化反应帮助延缓衰老过程。故选A。
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“Shout out to the cashier at the Mechanicsville Burger King, making this world a little brighter,” Elizabeth Chandler wrote on Facebook.

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Easter always tries to do what she can to provide the best customer service.

“Always go out of your way to help others,” she told WTVR.

Chandler, who also frequents this Burger King, said Easter isn't the only employee who goes above and beyond their job description.

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A. Her colleagues.

B. The reporters from WTVR.

C. The marketing manager.

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2.Easter's act of kindness is impressive because________.

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B. Elizabeth Chandler works for Yahoo.

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4.Why is Monica mentioned in the last paragraph?

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