The next great land area that man hopes to control is the moon. In size it is nearly equal to the area of North and South America. However, it presents a hostile (不友好的) environment. Temperatures range +120 to -150 degrees Centigrade (摄氏). There is no air, and no water.
Today there is considerable scientific speculation (思索) about living on the moon. When man will begin life on the moon surface is still not determined. But experts believe that settlement will take place in three steps. First, there will be increasing periods of exploration with temporary shelters (临时住所). These periods will be followed by longer stays with housing under the surface of the moon and daily necessities brought by the settlers themselves from the earth. Finally, settlements that are self-supporting will be founded.
The main job of the early settlers will be to stay alive. They will have to plant crops under huge domes (圆顶屋) to produce food and oxygen and find water sources. After this is done, the settlers will have time to explore the possibilities of commercial (商业的) development and to make discoveries important to science. The characteristics of the moon that make it bad for human staying alive may make it ideal for certain kinds of manufacturing (制造业). Operations requiring a vacuum (真空) or extreme cold are examples. Therefore, industrial diamonds might be produced on the moon.
39. The area of the moon is _________.
A. about the same as that of North and South America
B. larger than that of North and South America
C. hardly equal to that of North and South America
D. far smaller than that of North and South America
40. According to this passage, the settlement of the moon ________.
will soon be realized
can be done under the moon surface
is being experimented by many scientists
D. sounds entirely impossible
41. To stay alive on the moon, the early settlers must first of all be able to ________.
A. develop commerce
B. get enough food, oxygen and water
C. make discoveries important
D. explore the possibilities of industrial development
42. Though the environment on the moon is bad for human staying alive, it is very good for ________.
A. making such things as industrial diamonds   B. all kinds of manufactured goods
C. medical operations                      D. commercial development

About ten men in every hundred suffer from color blindness in some way. Women are luckier，only about one in two hundred is affected in this matter. Perhaps, after all, it is safer to be driven by a woman.

There are different forms of color blindness. In some cases a man may not be able to see deep red. He may think that red, orange and yellow are all shades of green. Sometimes a person cannot tell the difference between blue and green. In rare cases an unlucky man see everything in shades of green—a strange world indeed.

Color blindness in human beings is a strange thing to explain. In a single eye there are millions of very small things called "cones". These help us to see in a bright and tell difference between colors. There are also millions of "rods ", but these are used for seeing when it is nearly dark. They show us shape but no color.    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 lamp will. In a similar way human being also have favorite colors. Yet we are lucky. With the aid of the cones in our eyes we can see many beautiful colors by day, and with the aid of the rods we can see shapes at night, One day we may even learn more about the invisible colors around us.

1.According to the passage, with the help of the "cones", we can        

A．tell different colours                     B．see in a weak light

C．tell different shapes                     D．tell orange from yellow

2. Why do some people say it is safer to be driven by women?

A．Women are more careful.

B．There are fewer color-blind women.

C．Women are fonder of driving than men.

D．Women are weaker but quicker in thinking.

3.Which of the statements about the color-blind is true?

A．Not all of them have the same problem in recognizing colors.

B．None of them can see deep red.

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

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

4.We can attract and kill mosquitoes by using a        

A．red light                              B．yellow light

C．blue light                              D．green light

About ten men in every hundred suffer from color blindness in some way. Women are luckier，only about one in two hundred is affected in this matter. Perhaps, after all, it is safer to be driven by a woman.
There are different forms of color blindness. In some cases a man may not be able to see deep red. He may think that red, orange and yellow are all shades of green. Sometimes a person cannot tell the difference between blue and green. In rare cases an unlucky man see everything in shades of green—a strange world indeed.
Color blindness in human beings is a strange thing to explain. In a single eye there are millions of very small things called "cones". These help us to see in a bright and tell difference between colors. There are also millions of "rods ", but these are used for seeing when it is nearly dark. They show us shape but no color.    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 lamp will. In a similar way human being also have favorite colors. Yet we are lucky. With the aid of the cones in our eyes we can see many beautiful colors by day, and with the aid of the rods we can see shapes at night, One day we may even learn more about the invisible colors around us.
【小题1】According to the passage, with the help of the "cones", we can        

C
The next great land area that man hopes to control is the moon. In size it is nearly equal to the area of North and South America. However, it presents a hostile (不友好的) environment. Temperatures range +120 to -150 degrees Centigrade (摄氏). There is no air, and no water.
Today there is considerable scientific speculation (思索) about living on the moon. When man will begin life on the moon surface is still not determined. But experts believe that settlement will take place in three steps. First, there will be increasing periods of exploration with temporary shelters (临时住所). These periods will be followed by longer stays with housing under the surface of the moon and daily necessities brought by the settlers themselves from the earth. Finally, settlements that are self-supporting will be founded.
The main job of the early settlers will be to stay alive. They will have to plant crops under huge domes (圆顶屋) to produce food and oxygen and find water sources. After this is done, the settlers will have time to explore the possibilities of commercial (商业的) development and to make discoveries important to science. The characteristics of the moon that make it bad for human staying alive may make it ideal for certain kinds of manufacturing (制造业). Operations requiring a vacuum (真空) or extreme cold are examples. Therefore, industrial diamonds might be produced on the moon.
64. The area of the moon is _________.
A. about the same as that of North and South America
B. larger than that of North and South America
C. hardly equal to that of North and South America
D. far smaller than that of North and South America
65. According to this passage, the settlement of the moon ________.
A.will soon be realized
B.can be done under the moon surface
C.is being experimented by many scientists
D. sounds entirely impossible
66. To stay alive on the moon, the early settlers must first of all be able to ________.
A. develop commerce
B. get enough food, oxygen and water
C. make discoveries important
D. explore the possibilities of industrial development
67. Though the environment on the moon is bad for human staying alive, it is very good for ________.
A. making such things as industrial diamonds  
B. all kinds of manufactured goods
C. medical operations                     
D. commercial development  

C

The next great land area that man hopes to control is the moon. In size it is nearly equal to the area of North and South America. However, it presents a hostile (不友好的) environment. Temperatures range +120 to -150 degrees Centigrade (摄氏). There is no air, and no water.

Today there is considerable scientific speculation (思索) about living on the moon. When man will begin life on the moon surface is still not determined. But experts believe that settlement will take place in three steps. First, there will be increasing periods of exploration with temporary shelters (临时住所). These periods will be followed by longer stays with housing under the surface of the moon and daily necessities brought by the settlers themselves from the earth. Finally, settlements that are self-supporting will be founded.

The main job of the early settlers will be to stay alive. They will have to plant crops under huge domes (圆顶屋) to produce food and oxygen and find water sources. After this is done, the settlers will have time to explore the possibilities of commercial (商业的) development and to make discoveries important to science. The characteristics of the moon that make it bad for human staying alive may make it ideal for certain kinds of manufacturing (制造业). Operations requiring a vacuum (真空) or extreme cold are examples. Therefore, industrial diamonds might be produced on the moon.

64. The area of the moon is _________.

A. about the same as that of North and South America

B. larger than that of North and South America

C. hardly equal to that of North and South America

D. far smaller than that of North and South America

65. According to this passage, the settlement of the moon ________.

A.will soon be realized

B.can be done under the moon surface

C.is being experimented by many scientists

D. sounds entirely impossible

66. To stay alive on the moon, the early settlers must first of all be able to ________.

A. develop commerce

B. get enough food, oxygen and water

C. make discoveries important

D. explore the possibilities of industrial development

67. Though the environment on the moon is bad for human staying alive, it is very good for ________.

A. making such things as industrial diamonds  

B. all kinds of manufactured goods

C. medical operations                     

D. commercial development