"Hey, don't read in the hallway. Your eyesight will be damaged." You must have heard such warnings many times. Don’t read in dim (暗的)light! This is one of the “pearls of wisdom” that are supposed to help us live a healthy life. Such common beliefs, however, lack scientific basis, according to a paper published recently in the British Medical Journal.
Do you believe in the following everyday wisdom?
Reading in dim light ruins your eyesight.
In dim light, you might blink (眨眼) more, feel discomfort from drying and have trouble focusing. But the majority of eye experts believe it is unlikely to do any permanent damage.
We must drink at least eight glasses of water a day
In 1945, the Nutrition Council in US suggested that people need to consume 2.5 litres of water a day. But the water contained in food, particularly fruit and vegetables, as well as in milk, juice and soft drinks, also counts towards the total.
We only use 10 percent of our brains.
This myth arose as early as 1907. People have long argued about our power of self-improvement and our brains’ potential abilities. But detailed imaging shows that no area of the brain is silent or inactive.
Shaving your legs causes hair to grow black faster and thicker.
This theory is also illusion. Shaving has no effect on the thickness or rate of hair growth,
studies say. Just over time, the edge of hair gets worn away and thus the edge of long hair becomes finer (更细). So hair that is newly grown gives the impression of darkness.
【小题1】What does the paper say about some common beliefs?

A．They are pearls of wisdom	B．They help us live in healthy ways
C．They are well-known theories.	D．They do not have scientific basis.

【小题2】Which of the following is true according to the passage ?

A．Reading in dim light does harm to one’s eyes.

B．People need a total of 2.5 litres of water a day

C．People use 90 percent of their brains.

D．Shaving your legs will give you thicker hair.

【小题3】This passage is most likely to be found in __________ ?        

A．a newspaper	B．a science fiction
C．a biology textbook	D．a medical book

"Hey, don't read in the hallway. Your eyesight will be damaged." You must have heard such warnings many times. Don’t read in dim (暗的)light! This is one of the “pearls of wisdom” that are supposed to help us live a healthy life. Such common beliefs, however, lack scientific basis, according to a paper published recently in the British Medical Journal.

Do you believe in the following everyday wisdom?

Reading in dim light ruins your eyesight.

In dim light, you might blink (眨眼) more, feel discomfort from drying and have trouble focusing. But the majority of eye experts believe it is unlikely to do any permanent damage.

We must drink at least eight glasses of water a day

In 1945, the Nutrition Council in US suggested that people need to consume 2.5 litres of water a day. But the water contained in food, particularly fruit and vegetables, as well as in milk, juice and soft drinks, also counts towards the total.

We only use 10 percent of our brains.

This myth arose as early as 1907. People have long argued about our power of self-improvement and our brains’ potential abilities. But detailed imaging shows that no area of the brain is silent or inactive.

Shaving your legs causes hair to grow black faster and thicker.

This theory is also illusion. Shaving has no effect on the thickness or rate of hair growth,

studies say. Just over time, the edge of hair gets worn away and thus the edge of long hair becomes finer (更细). So hair that is newly grown gives the impression of darkness.

1.What does the paper say about some common beliefs?

A．They are pearls of wisdom                B．They help us live in healthy ways

C．They are well-known theories.             D．They do not have scientific basis.

2.Which of the following is true according to the passage ?

A．Reading in dim light does harm to one’s eyes.

B．People need a total of 2.5 litres of water a day

C．People use 90 percent of their brains.

D．Shaving your legs will give you thicker hair.

3.This passage is most likely to be found in __________ ?        

A．a newspaper                           B．a science fiction

C．a biology textbook                       D．a medical book

 

       “Hey, don't read in the hallway. Your eyesight will be damaged.” You must have heard such warnings many times. Don't read in dim (暗的) light! This is one of the “pearls of wisdom” that are supposed to help us live healthy lives. Such common beliefs, however, lack scientific basis, according to a paper published recently in the British Medical Journal.

       Do you believe in the following everyday wisdom?

       Reading in dim light ruins your eyesight.

       In dim light, you might blink (眨眼) more, feel discomfort from drying and have trouble focusing. But the majority of eye experts believe it is unlikely to do any permanent damage.

       We must drink at least eight glasses of water a day.

       In 1945, the Nutrition Council in the US suggested that people need to consume 2.5 litres of water a day. But the water contained in food, particularly fruit and vegetables, as well as in milk, juice and soft drinks, also counts towards the total.

       We only use 10 percent of our brains.

       This myth arose as early as 1907. People have long argued about our power of self-improvement and our brains' potential abilities. But detailed imaging shows that no area of the brain is silent or inactive.

       Shaving your legs causes hair to grow back faster and thicker.

       This theory is also an illusion. Shaving has no effect on the thickness or rate of hair growth, studies say. Just over time, the edge of hair gets worn away and thus the edge of long hair becomes finer (更细). So hair that is newly grown gives the impression of darkness.

1．What does the paper say about some common beliefs?

       A．They are pearls of wisdom.                  B．They help us live in healthy ways.

       C．They are well-known theories.              D．They do not have scientific basis.

2．Which of the following is TRUE according to the passage?

       A．Reading in dim light does harm to one's eyes.

       B．People need a total of 2.5 litres of water a day.

       C．People use 90 percent of their brains.

       D．Shaving your legs will give you thicker hair.

3．Why does newly-grown hair-look thicker?

       A．Because it is darker.                     B．Because it grows faster.

       C．Because its edge isn't worn away.      D．Because shaving has an effect on it.

4．Where is this passage most likely to be found?

       A．In a newspaper.                       B．In a science fiction.

       C．In a textbook.                          D．In a medical journal.

I clearly remember my mom telling me to drink milk every day—one glass in the morning and another at night. I also remember loving it while my sister thought quite the opposite—she would surreptitiously pour her milk into the sink or water the plants with it! I guess I should thank my mom for making us drink a lot of milk, so rich in calcium(钙), during those important years.

Today, calcium shortage is one of the main concerns of women in their 30s or even early 20s. The great fear is that when we reach our 50s or 60s, osteoprosis(骨质疏松症)will set in. That is why you can see a lot of advertisements for products supposedly containing a lot of calcium.

Because calcium is not that easy to acquire from the food we normally eat, busy women these days should take calcium supplements(补充物). There are a lot of different forms of these---calcium carbonate(碳酸钙)，oyster(牡蛎)shell or bone-meal-based calcium supplements.

You have to be careful when choosing which kind to take. This is because calcium is not easily absorbed by the body. So the fact that you are taking supplements doesn’t mean that the body is actually benefiting from them. Different supplements may have different instructions on dosage(剂量)and manner of intake. You can ask your doctor to help you determine which supplement is the best for your needs.

1.From what the author’s mother did we may infer that___________________.

A．her children had osteoporosis

B．she knew her children would benefit from milk

C．she must have suffered from osteorosis

D．she didn’t like her daughter who didn’t obey her order

2. Based on the passage, which of the following is NOT true?

A．The author’s sister will suffer from osteoprosis when reaches her 50s or 60s

B．Many businessmen have already been selling products supposedly containing calcium.

C．We can’t get enough calcium only from food we eat every day

D．Women as young as their 20s should be concerned about calcium shortage

3.What does the underlined word “surreptitiously” in the first paragraph probably mean?

A．Honestly

B．Frankly

C．Secretly

D．Curiously

4.We may infer from the last paragraph that____________________.

A．what one chooses as a calcium supplement might not work

B．one shouldn’t take in calcium without the permission of a doctor

C．the more calcium supplements one uses, the more calcium one can take in

D．it is dangerous to use calcium supplements without the guidance