Robots have been designed to do many things-play music，work in hospitals，but run a restaurant? There are two robot receptionists(接待员) and six robot waitresses and waiters in the Dalu Robot Restaurant in Jinan，Shandong．One hundred customers can eat in the restaurant at a time．Two of the robots serve drinks，while the other four serve the food． Not all the work in the restaurant is done by them．There are also people working there，especially in the kitchen．The cooks are humans because the robots don’t have the skills to cook．

1.Robots can play music．

2.Six robots work in the Dalu Robot Restaurant．

3.No people work in the kitchen．

4.Only a few customers can eat in the restaurant at a time．

5.The robots can’t cook delicious food．

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.

Do you want to know something about chil­dren in Africa? What to they do for fun every day? Find out here:

Education

School is expensive for many African children. Lots of families can't afford school uniforms or ex­ercise books even though they don't have to pay for school.

For those lucky enough to go to school , they have a lot to learn. Some take two language clas­ses: English or French, and their first language. There is also math, science, history, social studies and geography. Chores take up much of children's time after school. They have to get water and fire­wood for the family every day. Also there's clean­ing , washing and helping Mum with the meal.

Daily fun

It's not all work and no play. Sports are very popular. Children can make goals with twigs ( 嫩树枝)and their own footballs with plastic and bits of string ( 绳子 ). They play in the country and the streets of old towns. There're many football teams for teenagers in Africa.

Internet

It's really expensive to get on the Internet. To surf the net for 20 hours costs over 600 yuan. This is more than the average (平均 的) monthly pay per person.

Egypt and South Africa are the top two users of the Internet in Africa. All of the capital cities there can get on the Internet.

Some schools offer computer lessons but few students can enjoy computer fun at home.

1. The underlined word "Chores" probably means

A．网上冲浪B．家务杂活C．体育活动D．家庭作业

2. Sports are very popular in Africa because chil­dren _________.

A. do not need money to play

B. can play all kinds of ball games

C. don't like to go to school

D. don't like to do their homework

3.The passage is mainly about_________.

A. education in Africa

B. children's school life in Africa

C. the Internet in Africa

D. children's daily life in Africa

4.From the passage, we can infer (推断) that in Africa_________.

A. basketball is popular among children

B. children in Africa have to pay for school

C. some children in Africa have to take two for­eign language classes

D. people in Egypt and South Africa may get higher pay than people in the other countries

1 

About ten men in every hundred have the trouble of color blindness in some way. Women are luckier, only about one in two hundred is affected（感染）in this matter. Perhaps, after all ,it is safer to be driven by a woman.

There are different kinds of color blindness. For example, a man cannot see deep red. He may think that red, orange and yellow are all shades (影子) of  green. Sometimes a person can’t tell the difference between blue and green. Only a few unlucky men may see everything in shades of green— a strange world indeed.

Color blindness in human beings is a different thing to explain. In only one eye there are millions of very small things called “cones（锥状细胞）” . These help us to see in the bright light and to tell differences between colors. These are also millions of “rods“（杆状细胞），but these are used for seeing when it is nearly dark. They show us shapes but not colors.

Some insects have favorite colors. Mosquitoes(蚊子) like blue but do not like yellow. A red light will not attract insects, but a blue light will. Human beings also have favorite colors. Yet we are lucky. With the help of the cones in our eyes, we can see many beautiful colors by day, and with the help of the rods we can see shapes at night.

1.“Color blindness” means           in Chinese.

A. 盲目        B. 无色      C 色盲    D 讨厌颜色

2. Some people say it’s safer to be driven by women because         .

A. women drive more carefully

B. women are better at driving than men

C. women can see things more clearly

D. there are fewer color — blind women

3.With the help of the “cones”, we can          .

A. tell different shapes        B. kill insets

C. see in the dark            D. tell orange from yellow

4. We can attract and kill mosquitoes by using a           light.

A. red       B. yellow     C. blue     D. green

5. Which of the following sentences about color blindness is TRUE?

A. None of men can see deep red.

B. Not all of men have the same problem in recognizing colors.

C. None of men can tell the difference between blue and green.

D. All of men see everything in shades of green.