题目内容
About ten men in every hundred suffer from color blindness in some way.Women are luckier, only about one in two hundred is affected(影响) 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 can 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 may 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 light and to 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 beings 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.
1.This passage is mainly about ______.
A.color and its surprising effects B.women being luckier than men
C.danger caused by color blindness D.color blindness
2.According to the passage, with the help of the “cones”, we can ______.
A.tell different shapes B.see in weak light
C.kill mosquitoes D.tell orange from yellow
3.Why do some people say it is safer to be driven by women?
A.Women are more careful.
B.There are few color-blind women.
C.Women are fonder of driving than men.
D.Women are weaker but quicker in thinking.
4.We can attract and kill mosquitoes by using a ________.
A.red light B.yellow light C.blue light D.green light
DDBC
SALESMAN: Hi, young lady. Can I help you?
CUSTOMER: 6
SALESMAN: Okay. How about getting your father a new wallet?
CUSTOMER: Hmm. How much is that black wallet?
SALESMAN: Oh. It’s only $ 40.95.
CUSTOMER: 7
SALESMAN: Hmm. How about this brown leather one? It’s $25.99.
CUSTOMER: Um... I don’t think my father will like the design on the outside, and it doesn’t have a place to put pictures. Besides, I don’t have that much money.
SALESMAN: 8
CUSTOMER: I’m not sure. Probably about ten dollars or so. I’ve been helping my mom around the house for the past week to earn some money. This is all I have.
SALESMAN: 9
CUSTOMER: That’s really pretty, but the price tag says $13.99, and I know I don’t have that much.
SALESMAN: Well, let’s just say the tie went on sale. How about $5? What do you say?
CUSTOMER: 10
A.Okay. How much do you have to spend? |
B.Excuse me, where can I buy this kind of camera? |
C.Well... yeah. I’m looking for a Father’s Day gift. |
D.Oh, thanks, I’ll take it. |
E. Huh? That’s too expensive for me. Do you have a cheaper one?
F. Hmm. How about this tie?