题目内容
If you go to a fast food restaurant, you will probably see a lot of teenagers
(青少年). Today, many teenagers are overweight, and some of this is because of their bad eating habits. Most teenagers love food with a lot of fat, oil, salt, and sugar. People often call this kind of food“junk food”.But bad eating habits go beyond fast food. We find many teenagers eat unhealthily. Some don't have breakfast before they go to school. During the day, some don't have a proper meal for lunch. In a recent survey
(调查)at one school, scientists found that over two-thirds of the students didn't follow a healthy diet(饮食). They didn't like vegetables, and many of them didn't like to eat fruits. They preferred to eat food with a lot of salt, sugar, or fat.Parents today also worry about their children's diet. Some doctors give the following advice:
· Teenagers shouldn't eat too much junk food.
· Teenagers shouldn't eat food with too much salt. Salt can cause high blood pressure(高血压)in the future.
· Teenagers should eat food with less fat, oil, and sugar.
· Teenagers need to eat some fruits and vegetables every day. Fruits and vegetables are rich in vitamins(维生素)and have little fat.
· Teenagers need to drink more milk. Milk will help their bones grow.
· Teenagers need to eat breakfast every day. This is good for their body and mind.
(1)
“Junk food”contains(包含)a lot of ________.[ ]
A
.milk and sugarB
.fruits and sugarC
.vegetables and saltD
.fat, oil, salt and sugar(2) In a recent survey at one school, scientists found many students liked ________.
[ ]
|
A .vegetables |
B .unhealthy food |
|
C .fruits |
D .healthy food |
(3) What does the underlined word
“beyond”mean in Chinese in this passage?[ ]
|
A .超出 |
B .不如 |
|
C .相等 |
D .在后面 |
(4) In this passage, doctors think that teenagers should eat more ________.
[ ]
A
.food with no vitaminsB
.fat and sugarC
.vegetables and fruitsD
.salt and oil(5) The best title for this passage is ________.
[ ]
A
.Bad habitsB
.Junk foodC
.Unhealthy foodD
.Advice on healthy eating解析:
|
(1) 由文中Most teenagers love food with a lot of fat, oil, salt, and sugar. People often call this kind of food“junk food”.知。(2) 由文中In a recent survey(调查)at one school, scientists found that over two-thirds of the students didn't follow a healthy diet(饮食). They didn't like vegetables, and many of them didn't like to eat fruits.知。(3) 由文中But bad eating habits go beyond fast food.可推测出。(4) 由文中Teenagers need to eat some fruits and vegetables every day.可知。(5) 整篇文章都在讲健康饮食。 |
The Indians invented and developed the system of numbers from 1 to 9 and 0. We can use the ten numbers to make any number from the biggest to the smallest.
However, the ancient Romans invented a different system (系统) of numbers. They used symbols (符号) and replaced them. 1 is “Ⅰ” and 2 is “Ⅱ”. For larger numbers, they invented new symbols—5 is “Ⅴ”, 10 is “Ⅹ”, and so on. But they didn’t have a symbol for zero.
Here’s a table of the Roman numbers.
1 | 5 | 10 | 50 | 100 | 500 | 1,000 |
Ⅰ | Ⅴ | Ⅹ | L | C | D | M |
The Romans combined their symbols. In this way, “Ⅶ” means “5+1+1”, or 7. However, they found that “ⅡⅡ” (for 4) and “ⅤⅡⅡ” (for 9) were too confusing, so they thought out another idea.
If the “Ⅰ” comes after the “Ⅴ”, then you add it (Ⅵ is 6); if the “Ⅰ” comes before the “Ⅴ”, then you subtract (减去) it (Ⅳ is 4). The rule is that you are allowed to add up to three (e.g. Ⅷ is 8), but only subtract one (e.g. XL is 40).
How to remember the symbols?
Ⅰis like a finger. In a whole hand, the thumb (拇指) and the little finger make a V. Ten fingers are both hands, so the two Vs make an X..
Here is a way to remember the other symbols (L, C, D, M):Little Cats Drink Milk.
( ) 51. How many numbers can we make according to the Indians’ system ?
A. three: 0, 9, 1 B. ten C. eleven D. lots of
( ) 52. Which number was not in the ancient Roman’s number system?
A. 1 B. 9 C. 0 D. 5
( ) 53. What does the underlined word “combined” probably mean in the passage?
A. 合并 B. 分离 C. 增加 D. 削减
( ) 54. What does MD mean according to the Romans’ rule of calculating?
A. 500 B. 1000 C. 1500 D. 2000
( ) 55 Which sentence is NOT true according to the passage?
A. “Little Cats Drink Milk” can help us to remember some of the numbers symbols.
B. The Indians invented the system of numbers from 1 to 9 and 0.
C. You are not allowed to make a number like “XXL”
D. The ancient Romans repeated symbols to make any number.