更新时间: 试题数量: 购买人数: 提供作者:

有效期: 个月

章节介绍: 共有个章节

收藏
搜索
题库预览
Passage 1 For centuries, the pyramids of Giza have been timeless symbols of Egyptian culture. But who actually built them? For years, we did not know for sure. But archaeologists recently discovered an ancient village near the pyramids. Close by, there was also a cemetery where pyramid builders were buried. From studying these places, archaeologists can now confirm that the pyramids were not built by slaves or foreigners. Ordinary Egyptians built them. It took about eighty years to build the pyramids. According to archaeologists, about 20,000—30,000 people were involved in completing the task. The workers had different roles. Some dug up the rock, some moved it, and some shaped it into blocks. People also worked on different teams, each with its own name. On a wall in Khufu's Great Pyramid, for example, a group of workers wrote "Friends of Khufu". Teams often competed to do a job faster. Life for these workers was hard. "We can see that in their skeletons," says Azza Mohamed Carson Eidin, a scientist studying bodies found in the cemetery. The bones show signs of arthritis which developed from carrying heavy things for a long time. Archaeologists have also found many female skeletons in the village and cemetery. The damage to their bones is similar to the men's. Their lives may have been even tougher: male workers lived to age 40—45, but women to only 30—35. However, workers usually had enough food, and they also had medical care if they got sick or hurt. The work was challenging, but laborers were proud of their work. "It's because they were not just building the tomb of their king," says Egyptian archaeologist Zahi Hawass. "They were building Egypt. It was a national project, and everyone was a participant."【缺少答案,请补充】
Passage 2 In recent years, scientists all around the world have come to a terrifying conclusion. Global warming is a real problem, and one largely caused by human activity. But as experts debate how to solve the problem, ice near the North and South Poles is melting even faster than environmentalists once feared. The ice sheet of Greenland is also melting more quickly than scientists predicted. One of its largest glaciers (冰川)is moving toward the sea faster than expected. In fact, the glacier is moving twice as fast as it was in 1995. Rising air and sea temperatures are two well-known causes. Researchers have also discovered other unexpected processes that cause glaciers to melt faster. For instance, water from melting ice runs down cracks (缝隙) in the surface and gets between the ice and rock below. This makes it easier for the glacier to slide into the warmer sea water. Some researchers believe that the melting of Greenland’s ice, if it continues, could add at least a meter to global sea levels by 2100. If the ice sheet of Antarctica continues to melt at its current rate, the next few centuries could see at least a two-meter rise in sea levels, forcing tens of millions of people out of their homes. While the melting of glaciers may flood some areas of the Earth, in other places, global warming is making water disappear. Many scientists think the glaciers of the Himalayas and the Andes could disappear in this century. As a result, millions of people who depend on water from these mountain glaciers would find themselves in a critical situation. An increasing number of heat waves and droughts (干旱) worldwide also suggests global warming is having an impact on humans right now, and that it could change the face of the world in the future. How can we avoid these terrible consequences? We all have a role to play in saving our planet. An immediate shift in people’s attitude to climate change is needed. There is no issue this important—because the future of the planet is at stake.【缺少答案,请补充】