2022年12月大学英语六级考试模拟题-阅读理解Section C（1）

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　　2022年12月大学英语六级考试模拟题-阅读理解Section C（1）

　　Section C

　　Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B),C) and D). You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre.

　　Passage One

　　Questions 46 to 50 are based on the following passage.

　　Researchers have found a vast number of animal remains—including those of fish—at a site in the Sahara Desert, casting new light on the ancient peoples who used to live there. Recent investigations at the Takarkori rock shelter in southwestern Libya’s Acacus Mountains revealed nearly 18,000 individual specimens, almost 80 percent of which were fish, according to a study published in the journal PLOS ONE.

　　The remains have been dated to between 10,200 and 4,650 years ago, covering much of the early middle Holocene period. The rest of the remains consisted of mammals while the team also found a small quantity of bird, reptile (爬行动物) and amphibian (两栖类的) remains. The researchers said that the animal remains were human food waste given that they displayed cut marks and signs of burning. This has implications for our understanding of the people who used to live in the area, indicating that fish was an important food.

　　“The key findings are no doubt the fish remains. Although not uncommon in early Holocene contexts across North Africa, the quantity of fish we have found are unprecedented in the central Sahara,” Savino di Lernia, from the Sapienza University of Rome, said. “The study adds fresh information about climate change as well as cultural adaptations. It is particularly intriguing that fish was common also in the diet of early herders.”

　　“I believe that the quantity of fish remains in the earliest layers of occupation is really stunning. I particularly like the fact that early herders were quite good fishers, and fish was an important staple food,” he said.

　　Today, the environment of the Acacus Mountains is windy, hot and extremely dry. But the fossil record here indicates that for large parts of the early and middle Holocene, the region—like other areas of the Central Sahara—was humid and rich in water, as well as plants and animals. During this period, the area was also home to prehistoric humans who left behind several notable rock art sites.

　　But over thousands of years, the area became increasingly dry and, thus, less capable of sustaining standing bodies of water that are home to fish. This change in the climate is reflected in the study results. Around 90 percent of all the animal remains dated to between 10,200 to 8,000 years ago were fish. However, this figure decreases to 40 percent between 5,900 and 4,650 years ago. This changing environment forced the hunter-gatherers who once relied on the fish to adapt and alter their diet, shifting towards eating more mammals over　time.

　　According to the authors, the results provide, “crucial information on the dramatic climate changes that led to the formation of the largest hot desert in the world. Takarkori rock shelter has once again proved to be a fundamental place to reconstruct the complex dynamics between ancient human groups and their environment in a changing climate.”

　　46. What did the PLOS ONE study find at a site in the Sahara Desert?

　　A) Fishing tools.

　　B) Rock art works.

　　C) Human bones.

　　D) Animal remains.

　　47. By what evidence did researchers decide that the findings could be food waste of ancient people?

　　A) Traces of cutting and burning.

　　B) Estimated history of fish fossils.

　　C) Different specimens of wild animals.

　　D) Cooking tools found at the site.

　　48. According to Savino di Lernia, what’s peculiar about the findings in the research?

　　A) Ancient Africans fed on different kinds of food, including mammals.

　　B) Africa has been rich in wild animals since the prehistoric time.

　　C) Fish was once widely consumed as a food in early history of North Africa.

　　D) Many animals migrated regularly from North Africa to the Sahara Desert.

　　49. What did scientists find about the environment of the Acacus Mountains?

　　A) It has been hot and dry since thousands of years ago.

　　B) It was warm and damp, and rich in water long time ago.

　　C) It has been transformed by Africans’ agricultural activities.

　　D) It is much the same as it used to be thousands of years ago.

　　50. What’s the significance of scientists’ study results?

　　A) Gaining insight into ancient Africans’ architectures.

　　B) Defining the benefits of changing eating habits.

　　C) Finding the root causes behind the formation of the Sahara Desert.

　　D) Providing the evidence for the effects of global warming.

　　答案：

　　Passage One

　　46. D 47. A 48. C 49. B 50. C

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