In school, we are told to drink water between classes. Our parents ask us to bring our water bottles to school and we’re reminded by experts that water is good for our skin and helps control our weight. But how much should we actually be drinking?

For many years, people have followed the advice of drinking eight glasses of water, eight times a day, known as the “8×8 rule”. According to Jessica Brown, this seems to have partly come from a misunderstanding of old advice that was published almost 80 years ago. In 1945, a study advised drinking one millilitre (毫升) of liquid for each calorie (卡路里) of food. This is about two litres of water a day, or eight glasses per person. But, Jessica says, the reality is that different people have different needs. Weight, age and activity level all play a role in how much water someone should drink.

Then do we need to control how much water we drink? It’s not that important, according to Dr. Stanley Goldfarb from the University of Pennsylvania. He says our bodies are good at telling us when we need water. When we are thirsty, it means our bodies need more water. Our kidneys (肾脏) help us keep the water we have, even before we feel thirsty.

There are, of course, benefits to drinking water. It helps our bodies stay at the right temperature. It helps us keep away bad things in our bodies. It helps us digest (消化) food. It protects our joints (关节).

So, next time you feel thirsty, reach for a glass of water. But don’t worry if you don’t drink exactly eight glasses a day. Your body knows what it needs.

根据材料内容选择最佳答案。
【小题1】What is the “8×8 rule” advice based on?

A．A study published in 1945.

B．A common sense among the public.

C．A recent discovery by Jessica Brown.

D．Advice given by Dr. Stanley Goldfarb.

【小题2】What can influence how much water we should drink according to the passage?
①age ②height ③weight ④activity level ⑤color of skin

A．①②③

B．②③⑤

C．②③④

D．①③④

【小题3】What does the underlined word “benefits” in Paragraph 4mean?

A．Methods.

B．Degrees.

C．Advantages.

D．Discoveries.

【小题4】What does the author advise readers to do when they feel thirsty?

A．Wait until they are not thirsty.	B．Reach for a glass of water.
C．Keep doing what they are doing.	D．Drink as much water as possible.

【小题5】What’s the best title for the passage?

A．Simple Tips for Drinking Water	B．The Science Behind the “8×8 Rule”
C．The Importance of Drinking Water	D．The Truth About Drinking Water