摘要:Two eyes see more than one. A. can B. must C. might D. shall

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Do you constantly use the computer, whether for learning or entertainment? Computers give off radiation that is bad for your health, but here are some ways to protect yourself from computer radiation.

_1._ Green tea can be absorbed by the body easily into a form of vitamin A, which helps reduce radiation. _2._

It is advisable to attach a radiation filter plate (辐射过滤板) in front of your computer’s screen. Make sure to avoid putting any metal substances near your computer as these may have reflected some of the electromagnetic waves that are harmful to your health. _3._The brighter the screen the higher the radiation there will be and vice versa.

You can also put some radiation-absorbing plants such as several cacti near your computer to prevent radiation.

Make sure you do a skincare protection before sitting in front of the computer. _4._Wash your face soon after using the computer in order to reduce 70% of the radiation.

_5._ Old computer in general, has one to two times more radiations released than the new one within the same distance.

A.And adjust the brightness of your computer screen.

B.Apply a layer of facial mask to protect yourself.

C.And adjust the sound level on your computer.

D.The most efficient way is by drinking some coffee regularly.

E. The simplest way is by drinking 2 & 3 cups of green tea every day.

F. If possible, purchase a new computer instead of using an old model computer.

G. It also helps keep our eyes see things clearly in the dark by improving the visual ability.

 

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Thinking

·Some scientists claim that we humans are the only living things that are conscious(有意识的)—we alone are aware that we are thinking.

·No one knows how consciousness works—it is one of science’s last great mysteries.

·All your thoughts take place in the cerebrum(大脑皮质),which is at the top of your brain,and different kinds of thought are linked to different areas,called association areas.

·Each half of the cerebrum has four rounded ends called lobes(脑叶)—two at the front(frontal and temporal lobes)and two at the back(occipital and parietal lobes).

·The frontal lobe is linked to your personality and it is where you have your bright ideas.

·The temporal lobe is where you hear and understand what people say to you.

·The occipital lobe is where you work out what your eyes see.

·The parietal lobe is where you record touch,heat and cold,and pain.

·The left half of the brain controls the right side of the body.The right half controls the left side.

·One half of the brain is always dominant(in charge).Usually,the left brain is dominant,which is why 90% of people are right-handed.

1.Which part of your cerebrum is most active when you are making a telephone call?

A.The frontal lobe.

B.The temporal lobe.

C.The occipital lobe.

D.The parietal lobe.

2.Which of the following statements is true?

A.One’s personality has something to do with the frontal lobe.

B.Bright ideas come from the parietal lobe.

C.The occipital and temperal lobes are at the back of the cerebrum.

D.The occipital lobe is in charge of sound.

3.From the passage,we know the reason why around 10% of people are left-handed is that_______.

A.their frontal lobe is usually dominant

B.their temporal lobe is usually dominant

C.their right brain is usually dominant

D.their left brain is usually dominant

 

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Do you constantly use the computer, whether for learning or entertainment? Computers give off radiation that is bad for your health, but here are some ways to protect yourself from computer radiation.
_【小题1】_ Green tea can be absorbed by the body easily into a form of vitamin A, which helps reduce radiation. _【小题2】_
It is advisable to attach a radiation filter plate (辐射过滤板) in front of your computer’s screen. Make sure to avoid putting any metal substances near your computer as these may have reflected some of the electromagnetic waves that are harmful to your health. _【小题3】_The brighter the screen the higher the radiation there will be and vice versa.
You can also put some radiation-absorbing plants such as several cacti near your computer to prevent radiation.
Make sure you do a skincare protection before sitting in front of the computer. _【小题4】_Wash your face soon after using the computer in order to reduce 70% of the radiation.
_【小题5】_ Old computer in general, has one to two times more radiations released than the new one within the same distance.

A.And adjust the brightness of your computer screen.
B.Apply a layer of facial mask to protect yourself.
C.And adjust the sound level on your computer.
D.The most efficient way is by drinking some coffee regularly.
E. The simplest way is by drinking 2 & 3 cups of green tea every day.
F. If possible, purchase a new computer instead of using an old model computer.
G. It also helps keep our eyes see things clearly in the dark by improving the visual ability.

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When we see well, we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.
People who are near-sighted can only see things that are very close to their eyes. Everything else seems blurry. Many people who do a lot of work, such as writing, reading and sewing become near-sighted. People who are far-sighted suffer from just the opposite problem. They can see things that are far away, but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading, they must get glasses, too.
Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism (散光). This, too, can be corrected by glasses. Some people’s eyes become cloudy because of cataracts (白内障). Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them.
Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself, look at an object out of one eye; then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distances as people with two eyes.
【小题1】We should take good care of our eyes________.     .

A.only when we can see well
B.only when we cannot see perfectly
C.even if we can see wel
D.only when we realize how important our eyes are
【小题2】When things far away seem indistinct(模糊不清) , one is probably________.     .
A.near-sightedB.far-sighted
C.astigmaticD.suffering from cataracts
【小题3】The underlined word blurry in the second paragraph probably means_______.
A.obviousB.possibleC.clearD.unclear
【小题4】Having two eyes instead of one is particularly useful for_______   
A.seeing at nightB.seeing objects far away
C.looking over a wide area D.judging distances

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