根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
The Mayan Indians lived in Mexico for thousands of years before the Spanish arrived in the 1500s. The Maya were an intelligent, culturally rich people whose achievements were many. They had farms, beautiful palaces, and cities with many buildings. ___ 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.
In ancient Mexico there were many small clearings in the forest. In each clearing was a village with fields of corn, beans, and other crops around it. To clear the land for farms, the Maya cut down trees with stone axes. They planted seeds by digging holes in the ground with pointed sticks. __ But not every Maya had to be a farmer. Some were cloth makers, builders, or priests.
The Maya built large temples to honor the Mayan gods. Skillful workers built cities around these temples. 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 lived in the cities. The other people lived in small villages in the forests. They lived in small huts with no windows. The walls were made of poles covered with dried mud, and the roof was made of grass or leaves. ____.
Measuring time was important to the Maya. ____ A system was developed for measuring time accurately. Mayan priests made the system to keep track of time. They made a calendar based on their study of the sun, moon and stars. The Mayan calendar was far more accurate than the European calendars of the time.
Around the year 800, the Maya left their villages and beautiful cities, never to return. ____ They may have died from an infectious disease. They may have left because the soil could no longer grow crops. Scientists are still trying to find the lost secrets of the Maya. They are still one of our greatest mysteries.
| A．No one knows why this happened. |
| B．Most Maya lived a simple life close to nature. |
| C．The Maya were an intelligent, culturally rich people. |
| D．Farmers needed to know when to plant and harvest their crops. |
E. They had to fight against natural disasters as common occurrences.
F. One farmer was able to grow crops that produced food for several people.
G. The Mayan people knew a lot about nature and the world around them.
[1] Hello. It’s one of the first words we learn as babies, yet it’s one of the last ones we think to use as adults. That’s unfortunate, because saying hello is more than just saying hello—it is recognition of another’s worth. How might the world change—how might we change—if we mastered this word? To find out, I spent one month saying hello to every person I met. Here’s what I’ve learned. 
[2] It can boost （促进） productivity. In one of the few studies ever done on this subject, Allan Allday, an assistant professor of special education at Oklahoma State University, had middle school teachers greet their students individually each morning. This exchange of greetings raised the kids’ productivity. School went from impersonal to personal, and that resulted in more class participation and better grades. [3] Environments influence friendliness, One study found that people in the city were kiss likely to one hands with a stranger than those in the countryside. And researchers say, pleasure environments generally encourage more smiles and hellos than unpleasant ones. My experience was similarly. Whatever the reason, my urban hellos were answered far less often than my rural one. Similarly, people in vacation spots, like the Jersey Shore, were far friendlier than those hurrying work downtown. [4] It’s a form of universal health insurance. It’s impossible to say hello without smiling. And smiling has been shown to lower blood pressure, relieve stress and boost happiness. Apparently, a smile creates a similar effect in the recipient （接受者）。[5] So maybe we can make the world a better place by____________. After a month of doing it. I feel lighter and more connected and I have a better sense of well-being. 76. What does the author say about the adults according to Paragraph 1? （within 8 words）________________________________________________________________________ 77. Which sentence in the text is the closest in meaning to the following one? Teachers and students got friendlier so that the students became more active in learning and scored higher in tests. ________________________________________________________________________ 78. Fill in the blank in Paragraph 5 with proper words. （within 5 words）79. List three effects of smiling on health according to the text. （within 8 words）①②③
80. Translate the underlined sentence in Paragraph 3 Chinese.
一I have a favour to ask you．
一．
| A．Go ahead |
| B．It’s a pleasure |
| C．Help yourself |
| D．Ask，please |
It was so nice to hear from her. (信不信由你), we last met more than 30 years ago.(believe)
When the earthquake shook my hometown, I (碰巧) away from my home and escaped.(happen)
It is requested that every student (求助于)the dictionary while having difficulty in reading.(turn)