Every object has weight. But the center of its weight is not always in the middle of the object, If the top of an object is heavier than its bottom, it will fall over easily. We say that its center of gravity（引力）is high. But if the bottom is heavier, it won't fall easily. Then we say that its center of gravity is low.

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A．the top of the tower is heavier than its bottom

B．the bottom of the tower is not heavier than its top

C．its center of the gravity is still above the line of its bottom

D．its center of the gravity is not above the line of its bottom

[　　]

[　　]

A．The center of the weight is always in the middle of the object

B．The center of the weight is always on the object

C．The center of gravity is not always in the middle of the object

D．The center of the gravity is always high

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Dr. Lynn Moorman was a young doctor. She had a strange experience in June when she was spending Saturday night at her parents’ house. Whenever she stayed with them, she slept on the long sofa in the sitting room. The sofa was set against a wall under a large picture window (整块玻璃做的景观窗).

Around three o’clock that morning, Dr. Moorman opened her eyes and noticed a flashing light outside the house. She thought that it was a firefly (萤火虫). A moment later, as the light continued to flash, she realized that it was too bright to be a firefly.

Then the light moved towards the window and unbelievably through the window into the room. It passed in front of her, perhaps as close as three feet. Then Dr. Moorman noticed that it appeared to have two sets of wires (电线) coming from the top and bottom (底部). Each time the object flashed, Dr. Moorman saw it clearly. But when the light turned off, the object was no longer seen.

Dr. Moorman was quite scared. She thought about shouting, but couldn’t open her mouth. When the light moved into the kitchen, she ran to her sister’s bedroom. “Move over,” she said, “ I saw something, maybe an alien, that scared me and I’m coming into bed with you.” The next morning at breakfast she told her family what had happened, but no one else had noticed anything. Her experience remains a puzzle.

Did Dr. Moorman meet an alien? Did she imagine the object? Or did she see a small UFO that had come visiting that night?

54、From the first paragraph, we know _________.

A、Lynn was a single woman                    

B、Lynn spent Saturday at her parents’ house every week.

C、Lynn liked sleeping on the sofa                    

D、Lynn might not live with her parents

55、The underlined word “flashing” in the second paragraph means _________ in Chinese.

A、明亮的        B、发光的           C、闪烁的          D、昏暗的

56、What’s the best title for this passage?

A、A strange Experience   B、The object   C、Dr. Moorman   D、Sleeping on the sofa

When I was in primary school, I had a big argument with a boy in my class. l can't   31   what it was about, but I have never forgotten the   32  I learned that day.
I was sure that I was right and he was wrong.   33  , he strongly believed that I was wrong and he was right. The teacher decided to teach us a lesson. She   34  a good idea. She brought both of us to the front of the class and placed him on one side of her grey desk and me on  35    In the middle of the desk was a large, round object.  It was   36  for me to see that it was black.  She asked the boy what color the object was.  "  37," he answered in a loud voice.
I couldn't   38  that the object was whites considering that it was certainly black! One more argument started between the boy and me, this time   39  the color of the object.
The teacher told me to go stand where the key was standing and told him to come stand where I had been. We changed   40  , and then she asked me what the color of the object was. I 41  answer, "White. " It was then that I knew what was wrong. It was an object with two   42   colored sides, and from .his side it was white.   43  from my side was it black.
My teacher taught 'me a very important 1.esson that day: You must "  44  in other person's position (位置) and look at the  45  through their eyes in order to truly understand their ideas.
【小题1】A. understand              B. remember              C. explain
【小题2】A. class                  B. subject                C. lesson
【小题3】A. Therefore              B. Also                  C. However
【小题4】A. came up with           B. went on with           C. got along with
【小题5】A. another                 B. other                  C. the other
【小题6】A. hard                    B. clear                  C. lucky
【小题7】A. Black                  B. White                C. Grey
【小题8】A. realize                 B. describe                C. believe
【小题9】A. like                    B. against                 C. about
【小题10】A. places                  B. objects                  C. opinions
【小题11】A. could                  B. should                  C. had to
【小题12】A. similarly               B. differently              C. brightly
【小题13】A, But                   B. Still                    C..Only
【小题14】A. appear                  B. stand                  C, hide       
【小题15】A. situation                 B. discussion               C. solution

There are many colors in nature. But do you know if a color has weight? I think you’ll say “no”. But I am afraid you are wrong. If you don’t believe, you may do a small experiment.

First, put two objects with the same weight into two boxes. Then cover the box. Third, wrap one box with a red piece of paper, the other with a white piece of paper. OK. Now hold the boxes with your hand one by one. It is certain that you will think the red one is a little heavier.

Why do you think so? A scientist found that different colors have different weight in a man’s mind. So he did many tests and at last he got the result. That is to say, every color has its own weight in our mind and their order is the same. The heaviest color is red, then blue, green, orange, yellow and white.

The scientist told us that colors also have smell. Can you smell the color? Of course not. Then why did the scientist say so? That is because every color stands for a kind of light with a certain wavelength. It reaches our brain through sense organs.

According to this discovery, scientists say that people accept the colors they like, and refuse the colors they hate. So your body and mind will be healthy by using the colors you like. Or you’ll be nervous or even get ill. For example, if you stay in a room with red windows, wallpapers and furniture for two hours, you’ll feel you have been there for four hours. But if the room is blue,? you’ll feel you have been there for only an hour. Another example, if a person walks out of a red room and into a blue room, his temperature will fall. That means our body temperature will change with different colors.

1.The purpose of the second paragraph is to tell us ___________.

A. a red box is heavier than a white one

B. a color has weight in one’s mind

C. white paper is lighter than red paper

D. you can know the weight of a color by holding it

2.Why did the scientist say colors have smell?

A. Because people can sense the light from colors.

B. Because we can smell colors with our nose.

C. Because every color has its own sweet smell.

D. Because every color can give off light of the same length.

3.It can be implied from the text that ___________.

A. colors have orders in weight

B. colors can change the weight of an object

C. people would stay longer in a room with red windows

D. colors can affect our mood and health

4.This passage is probably a ___________.

A. book review????????????? ????????????? B. fiction novel????????????? ????????????? C. fairy tale????????????? ????????????? D. science report