Children can spend hours a day looking at computer screens and other digital devices(数码设备). Some eye doctors say this leads to an increase in “computer vision syndrome(电脑视力综合症).”

Nathan Bonilla-Warford is an optometrist（验光师）in Tampa, Florida. He has seen an increase in problems in children. “A lot more children come into the office either because their parents have noticed that they have headaches or red or watery eyes or discomfort, or because their nearsightedness appears to be increasing and they’re worried,” he says.

Dr. Bonilla-Warford says part of the problem is that children may be more likely to pay no attention to early warning signs than adults. “Even if their eyes start to feel uncomfortable or they start to get a headache, they’re less likely to tell their parents, because they don’t want to have the game or the computer or whatever taken away,” he explains.

He says another part of the problem is that people blink（眨眼）less often when they use digital devices. He says, “A person who uses an electronic device blinks about one third as much as we normally do in everyday life. And so that can result in the front part of the eye drying and not staying protected like normal.”

Eye doctors offer suggestions like following which is known as the 20/20/20 rule. That means every twenty minutes look away twenty feet or more for at least twenty seconds from whatever device you’re using.

Other suggestions include putting more distance between you and the device and using good lighting. Of course, another way is to spend less time looking at screens. Many experts say children should spend no more than two hours a day using digital devices—with no screen time for children under two.

But not all eye doctors have noticed an increase in problems in children. Dr. David Hunter, from Children’s Hospital Boston, has not seen an increase in his practice. “While it is possible to develop fatigue looking at screens for a long period of time, there’s certainly no proof that it actually causes any damage（伤害）to the eyes.” he says.

1.Which of the following is true according to the passage?

2.What does the underlined word “fatigue” mean?

3.What can be the best title for the passage?

1 

John and Bobby worked in the same company. Both of them worked very hard. However, several years later, Mr. Ted, the boss of the company, asked Bobby to be market manager. John could not accept the fact. He thought the boss only liked those who flattered(奉承) him. So he decided not to work there.

The boss knew John well and asked John to do one thing before he left. He asked John to go and find out anyone selling watermelon in the market. Soon John returned and said that he found a man selling watermelon. The boss asked him how much the watermelon was. John shook his head.

The boss asked John to wait a moment. Then he called Bobby to come to his office. He asked Bobby to do the same thing. When Bobby returned, he told the boss that only one person was selling watermelon. It was $1.2 a kilo and $10 for 10 kilos. Each watermelon weighed about 2 kilos. All came from the South two days ago.

John was much moved and realized the difference between himself and Bobby. Chances are in the daily details(细节) and a more successful person sees more and father.

1.Who was the market manager?

A. John.                  B. Bobby.                C. Ted.

2.How did John feel about Ted’s choice first?

A. Moved.                B. Annoyed.               C. Accepted.

3.Why did Ted ask John and Bobby to do the same thing?

A. To buy some fresh watermelons for the workers.

B. To find the price of watermelon in the market.

C. To help John know the difference between himself and Bobby.

4.What can be the best title(标题) for the passage?

A. More, Details, More Chances.

B. More Practice, More Success.

C. Better Luck, Better Jobs.

John and Bobby worked in the same company. Both of them worked very hard. However, several years later, Mr. Ted, the boss of the company, asked Bobby to be market manager. John could not accept the fact. He thought the boss only liked those who flattered(奉承) him. So he decided not to work there.
The boss knew John well and asked John to do one thing before he left. He asked John to go and find out anyone selling watermelon in the market. Soon John returned and said that he found a man selling watermelon. The boss asked him how much the watermelon was. John shook his head.
The boss asked John to wait a moment. Then he called Bobby to come to his office. He asked Bobby to do the same thing. When Bobby returned, he told the boss that only one person was selling watermelon. It was $1.2 a kilo and $10 for 10 kilos. Each watermelon weighed about 2 kilos. All came from the South two days ago.
John was much moved and realized the difference between himself and Bobby. Chances are in the daily details(细节) and a more successful person sees more and father.
【小题1】Who was the market manager?
A. John.                 B. Bobby.                C. Ted.
【小题2】How did John feel about Ted’s choice first?
A. Moved.                B. Annoyed.               C. Accepted.
【小题3】Why did Ted ask John and Bobby to do the same thing?
A. To buy some fresh watermelons for the workers.
B. To find the price of watermelon in the market.
C. To help John know the difference between himself and Bobby.
【小题4】What can be the best title(标题) for the passage?
A. More, Details, More Chances.
B. More Practice, More Success.
C. Better Luck, Better Jobs.

The Mayan（玛雅的）Indians lived in Mexico for thousands of years before the Spanish arrived in the 1500s. The Mayan achievements were many. They had farms, beautiful palaces, and cities with many buildings. The Mayan people knew a lot about nature and the world around them. This knowledge helped them to live a better life than most people of that time, because they could use it to make their lives more comfortable and rewarding（值得的）. Knowledge about tools and farming, for example, made their work easier and more productive.
The Maya believed in many gods, including rain gods, sun gods, and corn gods. The people built large temples to honor the Mayan gods. Skillful workers built cities around these temples. It was difficult for them to build these cities, because they had no horses to carry the heavy stone they used to build with. Workers had to carry all of the building materials themselves. Today, many of these ancient Mayan cities and temples are still standing.
Although the cities that the Maya built were beautiful, and the people worked hard to build them, very few of the people lived in them. Usually, only the priests（牧师）lived in the cities.
The other people lived in small villages in the forests. Their houses were much simpler than the elaborate buildings in the cities. They lived in small huts（小屋）with no windows. The walls were made of poles covered with dried mud, and the roof was made of grass or leaves. Most Maya lived a simple life close to nature.
The Mayan priests studied the Sun, the Moon, stars, and planets. They made a calendar from what they learned. The year was divided into 18 months of 20 days each with five days left over. The Mayan calendar was far more exact than the European calendars of the time.
Around the year 800, the Maya left their villages and beautiful cities, never to return. No one knows why this happened. They may have died from some disease. They may have left because the soil could no longer grow crops. Archaeologists（考古学家）are still trying to find the lost secrets of the Maya.
【小题1】What does the underlined word “elaborate’’ mean?