【导语】为了⽅便⼤家的学习，⽆忧考为⼤家第⼀时间整理了2017年11⽉4⽇雅思阅读机经真题答案及解析。本⽂为⼤家汇总了友版的2017年11⽉4⽇雅思考后回忆，并附上相关解析。仅供参考。
⼀、考试概述：
本次考试的⽂章两篇新题⼀篇旧题，第⼀篇描述了两个科学家在撒哈拉的发现，研究了古代⼈的⽣存⽅式，第⼆篇是讲了利⽤⼼理学对课堂⾏为进⾏研究，第三篇是讲⾮语⾔交流的，⼈类除了⽤语⾔交流，其他⼿势、⾏为等的⾮语⾔形式也很重要 ⼆、具体题⽬分析
Passage 1：
题⽬：Human Remain in Green Sahara
题型：判断题4 +简答题3+填空题6
新旧程度：旧题
⽂章⼤意：描述了两个科学家在撒哈拉的发现，研究古代⼈的⽣存⽅式。
参考⽂章：
Human Remain in Green Sahara
A
On October 13,2,000, a small team of paleontologists led by Paul Sereno of the University of Chicago clambered out of three battered Land Rovers, filled their water bottles, and scattered on foot across the toffee-colored sands of the Tenere dert in northern Niger. The Tenere，on the southern flank of the Sahara, easily ranks among the most desolate landscapes on Earth. The Tuareg，turbaned nomads who for centuries have ruled this barren realm, refer to it as a “dert within a dert”a California-size ocean of sand and rock, where a single massive dune might stretch a hundred miles, and the combination of 120-degreeheat and inexorable winds can wick the water from a human body in less than a day. The harsh conditions, combined with intermittent conflict between the Tuareg and the Niger government, have kept the region largely unexplored.
B
Mike Hettwer, a photographer accompanying the team, headed off by himlf toward a trio of small dunes. He cre徐州周边旅游景点大全
sted the first slope and stared in amazement. The dunes were spilling over with bones. He took a few shots with his digital camera and hurried back to the Land Rovers. ‘I found some bone
s:'Hettwer said, when the team had regrouped. "But they're not dinosaurs. They're human."
C
In the spring of 2005 Sereno contacted Elena Garcea, an archaeologist at the University of Cassino, in Italy, inviting her to accompany him on a return to the site. Garcea had spent three decades working digs along the Nile in Sudan and in the mountains of the Libyan Dert, and was well acquainted with the ancient peoples of the Sahara. But she had never heard of Paul Sereno. His claim to have found so many skeletons in one place emed far fetched, given that no other Neolithic cemetery contained more than a dozen or so. Some archaeologists would later be skeptical; one sniped that he was just a
‘moonlighting paleontologist.’ But Garcea was too intrigued to dismiss him as an interloper. She 费用英语
agreed to join him.
D
Garcea explained that the Kiffian were a fishing-bad culture and lived during the earliest wet period, between 8,000 and 10,000 years ago. She held a Kiffian sherd next to a Tenerian one. “What is so amazing is that the people who made the two pots lived more than a thousand years apart.
E
Over the next three weeks, Sereno and Garcea-- along with five American excavators, five Tuareg guides, and five soldiers from Niger's army, nt to protect the camp from bandits-- made a detailed map of the site, whic薯包籺
h情感人生
they dubbed Gobero, after the Tuareg name for the area. They exhumed eight burials and c梦到孩子丢了
ollected scores of artifacts from both cultures. In a dry lake bed adjacent to the dunes, they found dozens of fishhooks and harpoons carved from animal bone. Apparently the Kiffian fishermen weren't just going after small fry: Scattered near the dunes were the remains of Nile perch, a beast of a fish that can weigh nearly 300 pounds, as well as crocodile and hippo bones.
F
Sereno flew home with the most important skeletons and artifacts and immediately began planning for the next field ason. In the meantime, he carefully removed one tooth from each of four skulls and nt them to a lab for radiocarbon dating. The results pegged the age of the tightly bundled burial sat roughly 9,000 years old, the heart of the Kiffian era. The smaller ‘sleeping’ skeletons turned out to be about 6,000 years old, well within the Tenerian period. At least now the scientists knew who was who.
G In the fall of 2006 they returned to Gobero, accompanied by a larger dig crew and six additional scientists. Garcea hoped to excavate some80 burials, and the team began digging. As the skeletons began to emerge from the dunes, each prented a fresh riddle, especially the Tenerian. A male skeleton had been buried with a finger in his mouth.
H
Even at the site, Arizona State University bioarchaeologist Chris Stojanowski could begin to piece together some clues. Judging by the bones, the Kiffian appeared to be a peaceful, hardworking people. “The lack of head and forearm injuries suggests they weren't doing much fighting,” he told me. “And the guys were strong.” He pointed to a long，narrow ridge running along a femur. “That’s the muscle attachment，” he said. “This individual had huge leg muscles, which means he
was eating a lot of protein and had a strenuous lifestyle-- both consistent with a fishing way of life.” For contrast, he showed me the femur of a Tenerian male. The ridge was barely perceptible. “This guy had a much less strenuous lifestyle,” he said,“which you might expect of a herder."
I
Stojanowski's asssment that the Tenerian were herders fits the prevailing view among scholars of life in the Sahara 6,000 years ago, when drier conditions favored herding over hunting. But if the体育锻炼对学生的好处
Tenerian were herders, Sereno pointed out, where were the herds? Among the hundreds of animal bones that had turned up at the site, none belonged to goats or sheep, and only three came from a cow species. “It’s not unusual for a herding culture not to slaughter their cattle, particularly in a cemetery，M Garcea responded, noting that even modem pastoralists, such as Niger’s Wodaabe, are loath to butcher even one animal in their herd. Perhaps, Sereno reasoned, the Tenerian at Gobero were a transitional group that had not fully adopted herding and still relied heavily on hunting and fishing.
J
Back in Arizona, Stojanowski continues to analyze the Gobero bones for clues to the Green Saharans’ health and diet. Other scientists are trying to derive DNA from the teeth, which could reveal the genetic origins of the Kiffian and Tenerian —and possibly link them to desc计算机信息安全
endants living today. Sereno and Garcea estimate a hundred burials remain to be excavated. But as the harsh Tenere winds continue to erode the dunes, time is running out. “Every archaeological site has a life cycle，”Garcea said. “It begins when people begin to u the place, followed by disu, then nature
takes over, and finally it is gone. Gobero is at the end of its life.”
