About ten men in every hundred suffer from colour blindness in some way. Women are luckier. Only about one in two hundred is affected in this matter. So some people say it is safer to be driven by women.
There are different forms of colour 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（色调）of green. Sometimes a person cannot tell the difference between blue and green. In rare cases an unlucky man may see everything in shades of green—a strange world indeed.
Colour blindness in humans is a strange thing to explain. In our eyes there are millions of very small things called “cones”. These help us to see in a bright light and to tell differences between colours. There are also millions of “rods”, but these are used for seeing when it is nearly dark. They show us shapes but no colour.
Some insects have favourite colours. 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 humans also have favourite colours. Yet we are lucky. With the aid of the cones in our eyes we can see many beautiful colours 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（看不见得）colours around us.
1.With the help of the cones, we can .
A. see in a weak light
B. tell different shapes
C. kill mosquitoes
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 colour-blind women.
C. All of them see everything in shades of green.
D. None of them has trouble in recognizing colours.
3.This passage is mainly about .
A. colour and its surprising effects
B. danger caused by colour blindness
C. colour blindness
D. the invisible colours around us
九年级英语阅读理解中等难度题
About ten men in every hundred suffer from colour blindness in some way. Women are luckier. Only about one in two hundred is affected in this matter. So some people say it is safer to be driven by women.
There are different forms of colour 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（色调）of green. Sometimes a person cannot tell the difference between blue and green. In rare cases an unlucky man may see everything in shades of green—a strange world indeed.
Colour blindness in humans is a strange thing to explain. In our eyes there are millions of very small things called “cones”. These help us to see in a bright light and to tell differences between colours. There are also millions of “rods”, but these are used for seeing when it is nearly dark. They show us shapes but no colour.
Some insects have favourite colours. 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 humans also have favourite colours. Yet we are lucky. With the aid of the cones in our eyes we can see many beautiful colours 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（看不见得）colours around us.
1.With the help of the cones, we can .
A. see in a weak light
B. tell different shapes
C. kill mosquitoes
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 colour-blind women.
C. All of them see everything in shades of green.
D. None of them has trouble in recognizing colours.
3.This passage is mainly about .
A. colour and its surprising effects
B. danger caused by colour blindness
C. colour blindness
D. the invisible colours around us
九年级英语阅读理解中等难度题查看答案及解析
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.
九年级英语阅读理解困难题查看答案及解析
Two disabled men from Hebei Province (one is blind and the other has no arms) have spent ten years ___________ trees together.
A. plant B. plants C. planting D. planted
九年级英语单选题中等难度题查看答案及解析
It is reported that people in the world are suffering from the HlNl flu.
A、ten thousands
B、thousands of
C、several thousands of
九年级英语单项填空中等难度题查看答案及解析
. ________ people in the world are suffering from the H1N1 flu.
| A．Several thousands of | B．Ten thousands | C．Thousands of | D．Thousands |
九年级英语单项填空简单题查看答案及解析
It is reported that _____ people in the world are suffering from the H5N6 flu.
A. thousand of B. ten thousands
C. thousands of D. thousands
九年级英语单项填空中等难度题查看答案及解析
It is reported that _______ people in the world are suffering from the H1N1 flu.
A. ten thousand of B. ten thousands C. thousands of D. ten thousands of
九年级英语单项填空中等难度题查看答案及解析
Every winter the Indians caught beavers (河狸或称为海狸).They sold these beaver furs to men from France. In the 1600s and 1700s,people in France wanted beaver furs for coats and hats. Other countries wanted these furs, too . Wearing a beaver fur hat became a sign .It said ,“Look at this man! This man is rich!”
In the 1800s,men in this country began to wear beaver hats. They too, wanted to wear the sign that said,“ Look at those men! They are rich!”
Soon it was hard to find beavers. To get more beaver furs, traders had to move West. Traders began to explore this new country. They came back with wonderful stories about the new land. Before long, many people wanted to go West to live.
Where people go, towns grow. Soon there were new towns in the West. Men looking for beaver for fancy(珍贵的，昂贵的) hats helped the West grow.
1.Wearing a beaver hat was a sign that a man was _________.
A. a hunter B. rich C. a trader D. an Indian
2.Which of the following does this story lead you to believe?
A. Beavers began to wear fancy hats.
B. The traders would not go West.
C. The fur traders helped the country grow.
D. The traders wore furs.
3.What did the traders do when beavers were hard to find?
A. To get more beaver furs, traders had to move West.
B. The traders had to find rich men wearing signs.
C. The traders had to wear beaver hats out West.
D. They made friends with beavers.
4.When did Indians begin to wear beaver hats?
A.1600s. B.1700s. C.1800s. D.1900s.
5.The main idea of the whole story is that _________.
A. traders carried signs for rich men
B. the search for beavers helped the West to grow
C. many wonderful stories were told about the West
D. the beavers were very foolish
九年级英语阅读理解中等难度题查看答案及解析
About a hundred people lived in a very small mountain village. It was very from the other villages and towns. They had few friends and they got bad harvest. But of them left the village. Of course there was neither electricity nor gas（煤气）there.
Once a writer the village. The backwardness（落后）of the village surprised him. He decided about it to the world. So he took the oldest villager to London. The old man told all about his home village to the people. Several months he returned. All the villagers went to see him and asked him how he had enjoyed in the city.
“Everything is wonderful in , ”the old man said.
“I’ve to many good places and eaten all kinds of nice food and other things. But the trouble was I could not at night. ”
“What happened to you? ”his wife asked.
“The was on in my bedroom all the time.”
Why not blow（吹） it out, then? ”
“I tried,but it was inside a little glass bottle. ”
1.A. close B. far C. near D. high
2.A. All B. Some C. None D. Hundreds
3.A. visited B. lived C. stayed D. got to
4.A. to write B. to speak C. to say D. to tell
5.A. after B. later C. soon D. ago
6.A. food B. music C. himself D. traffic
7.A. town B. mountain C. village D. London
8.A. gone B. came C. been D. got
9.A. sleep B. help C. walk D. see
10.A. window B. radio C. light D. TV set
九年级英语完形填空中等难度题查看答案及解析
The number of the children in the school ________ about three hundred. ________ of them________ from the countryside.
A. is; 20 percents; are B. is; 20 percent; are
C. are; 20 percent; is D. are; 20 percents; are
九年级英语单项填空中等难度题查看答案及解析