It was very cold outside my car. I did not want to get out of it__31__we passed by a cafe. Suddenly I noticed a short old man, __32__ with some bits of cloth, shaking(摆动)with the cold. He was waiting for anyone who would__33__ him a coin or a cup of hot coffee.
I asked my __34_ to go over and hand this old man something. He __35__ into my husband’s face, smiled and said, “__36__ . ” I felt so happy and I wished the old man could live __37__ the cold night.
I was sure to meet him again and find out how he was the next__38__, as I have to pass this way every day. I did so the next evening, and he remembered the__39__and came up to my window and __40__ at me. This time I offered(提供) him a __41__of food. He reached out for the bag and I gave him my hand. He __42__ the food, smiled and said, “May God bless you.” I looked at the old man and he __43__ me think of my father.
I do hope all of us will remember that maybe one day, it could happen to one of us, __44__ please do not pass by a __45__ person without offering at least a word of love and a kind smile or an act of kindness of any kind.

It was very cold outside my car. I did not want to get out of it  36  we passed by a cafe. Suddenly I noticed a short old man, covered with some bits of clothes, shaking with the cold. He was waiting for anyone who would  37  him a coin or a cup of hot tea.
I asked my  38  to go over and hand this old man something. He  39  into my husband’s face, smiled and said, “ 40 .” I felt so happy and I wished the old man could live  41 the cold night.
I was sure to meet him again and find out how he was the next   42  , as I have to pass this way every day. I did so the next evening, and he remembered the  43  and came up to my window and 44  at me. This time I offered him a  45  of food. He reached out for the bag and I gave him my hand. He  46  food, smiled and said, “May God bless you.” I looked at the old man and he   47  me think of my father.”
I do hope all of us will remember that maybe one day, it could _48___to one of us,  49  please do not pass by a   5 0  person without offering at least a word of love and a kind smile or an act of kindness of any kind.

It may seem easy to say that plants and animals are different. Any child can tell the difference between  a tree and a dog. But those differences are far deeper than just what they look like. The cells (细胞) that plants are made up of are different. In other words, the cell wall of plants has something special.

First of all, it's important to find that not all plant cells have a cell wall. Besides, there are many differences of a cell wall based on the kinds of plant. The following is meant to be what a plant cell wall is  like.

  The cell wall of a plant is on the outside of the cell membrane (膜). It is usually hard and cannot be bent easily, but the degree of flexibility (韧性) of the cell wall is different. It is based on the special use that the cell has in keeping the plant alive. Cells that make up the trunk of a tree are clearly less flexible than? cells on a leaf.

     Cell walls act in many ways. They serve to protect the plant. They provide support, as well as help in the movement of chemicals and wastes into and out of the cell.  More importantly, they control the water? that goes in and out.  Plants must have good water controlling systems (系统), allowing them to keep water during dry seasons, and get rid of unnecessary water. Plants can't walk around to find water, so  being able to control water is very important.

So there you have it , what a plant cell wall is. Of course, there are many other things that are not talked about here. Knowing more about plant cell wails requires further study and research.

1.From the first two paragraphs we can find that _____.

A. all plants have a ceil wall?????????????

B. plant cells and animal cells are the same

C. different kinds of plant have different cell walls

D. there are no differences between the cells of a tree and a dog

2.The underlined word "bent" in the passage is the closest in meaning to _____.

A. 变形的 ?? B. 防水的   ? C. 太阳灼伤的     ??? D. 表皮破损的

3.Cells in the trunk of a tree are _____ those on a leaf.

A. as flexible as             ?????????  B. not so flexible as

C. more important than                ?? D. less important than

4.What is the most important use of a plant cell wall?

A. To protect the plant.                ???? B. To provide support.

C. To move chemicals and wastes.       D. To control the water.

It was very cold outside my car. I did not want to get out of it__31__we passed by a cafe. Suddenly I noticed a short old man, __32__ with some bits of cloth, shaking(摆动)with the cold. He was waiting for anyone who would__33__ him a coin or a cup of hot coffee.

I asked my __34_ to go over and hand this old man something. He __35__ into my husband’s face, smiled and said, “__36__ . ” I felt so happy and I wished the old man could live __37__ the cold night.

   I was sure to meet him again and find out how he was the next__38__, as I have to pass this way every day. I did so the next evening, and he remembered the__39__and came up to my window and __40__ at me. This time I offered(提供) him a __41__of food. He reached out for the bag and I gave him my hand. He __42__ the food, smiled and said, “May God bless you.” I looked at the old man and he __43__ me think of my father.

 I do hope all of us will remember that maybe one day, it could happen to one of us, __44__ please do not pass by a __45__ person without offering at least a word of love and a kind smile or an act of kindness of any kind.

1.A. after            B. when        C. before     D. if

2.A. covered          B. tied         C. filled            D. provided

3.A. send             B. leave      C. greet          D. accept

4.A. father           B. son            C. husband    D. friend

5.A. watched          B. knocked     C. came       D. looked

6.A. Excuse me     B. Beg your pardon  C. Take it easy D. Thank you

7.A. in               B. through         C. under          D. off

8.A. year             B. month       C. week       D. day

9.A. office           B. gift            C. car        D. shop

10.A. smiled              B. pointed         C. called     D. shouted

11.A. box             B. bag             C. bottle         D. basket

12.A. held            B. ordered        C. dropped    D. received

13.A. got             B. forced      C. made           D. allowed

14.A. so              B. and             C. or         D. but

15.A. quiet           B. sick         C. poor          D. shy