DNA analysis has revealed family relationships between more than 10 generations of Stone Age people at megalithic (巨石的) tombs in Ireland and Sweden.
The evidence suggests that megaliths, prehistoric large stone structures, sometimes acted as graves for family groups in northwestern Europe thousands of years ago. The latest findings throw new light on the origins and social structure of the groups that built megaliths in this region—a history that has long been hidden in mystery.
For their study, the international team of researchers analyzed the genomes—the complete set of genetic material in a cell—of 24 Stone Age individuals from five megalithic burial sites in Ireland, Scotland and Gotland, a large Swedish island in the Baltic Sea.
This analysis showed that many of the individuals buried at each megalith, who all lived between 3,800 B.C. and 2,600 B.C., according to radiocarbon-dating of their remains, were closely related via family ties.
The results also showed that the individuals buried at the megaliths were related to Neolithic farmers in northern and western Europe but genetically distinct from other hunter-gatherers. This was particularly noticeable at the Ansarve site on the island of Gotland.
“The people buried in the Ansarve tomb are remarkably different on a genetic level compared to the individuals dug out from hunter-gather contexts, showing that the burial tradition in this megalithic tomb, which lasted for over 700 years, was performed by distinct groups with roots in the European Neolithic expansion,” Magdalena Fraser, co-first author from Uppsala University, said in the statement.
1.What’s the significance of the new findings?
A. It reveals the family ties between people in Ireland and Sweden.
B. It implies that many people buried in the tombs were closely related.
C. It indicates the long-hidden mystery concerning DNA analysis.
D. It suggests that the megaliths became tombs thousands of years ago.
2.How did the researchers reach their findings?
A. By interviewing individuals. B. By travelling to different regions.
C. By analyzing genes. D. By studying the burial sites.
3.Which is true according to the latest findings?
A. Some people buried in the tombs were related to farmers.
B. Few people buried in the tombs were genetically different.
C. All the people buried at megaliths had family relationships.
D. People buried in the Ansarve tomb were dug out 700 years later.
4.What’s the main idea of this passage?
A. Megaliths served as tombs thousands of years ago.
B. People buried at the megaliths were recently analyzed.
C. Latest findings shed light on a mystery about burials.
D. Stone-Age people in Ireland and Sweden had close ties.
Dreaming of summer picnics filled with family and fun? We’ve come up with 4 of the top picnic areas across the US.
Cumberland Islands, Georgia
Just a few hours south of Savannah, this national seashore is a wonderful picnic place. It’s an unspoiled place in the Deep South with over 50 miles of hiking trails (小径). Covered in Spanish moss, the trails are lined with trees and since it’s still a rural area, the stars line up for a grand show at night and create the perfect evening starlit picnic opportunity.
Grant Park, Chicago
If you are looking for delicious food in Chicago, go for a taste of a 20-day, lake-front, foodie festival that happens in October each year. Grab a spot near the fountain to enjoy your picnic, appreciate the city scenery and lake views and relax with family and friends. If you are there on July 4th, be sure to plan the day to include the fireworks display at the Navy Pier.
Cranberry Islands, Maine
Here, you’ll enjoy natural picnics with island views. The islands are a delightful group of islands about 20 minutes offshore from Acadia National Park. You can visit the islands by private boat or ferry service. Bring a picnic basket along for the ride as it’s a romantic picnic area to take your special someone or go for a family outing to visit the islands.
Big Sur, California
The Point Lobos State Reserve is a small gem. Besides the coastal wildlife there are rare plant communities, and unique geological formations. It’s good to have a picnic there. We recommend bringing a telescope, because much of the wildlife can be seen only at a distance.
1.Why does the writer advise us to go to Cumberland Islands?
A.Because they are just next to Savannah.
B.Because they have a grand show every night.
C.Because they are almost covered in Spanish moss.
D.Because they keep their original ecology (生态).
2.Where can you enjoy observing wildlife with a telescope?
A.At the Navy Pier. B.At the Point Lobos State Reserve
C.At Acadia National Park. D.In the Deep South.
3.Where can we most probably read this passage?
A.In a personal dairy. B.In a science report.
C.In a geography textbook. D.In a travel magazine.
假定你是李华，你的城市将有一个大型抗击新冠肺炎英雄人物展，请写一封邮件邀请你的朋友Adam同去。内容包括：
1.展出时间和地点；
2. 展出形式与内容；
3. 表达期待。
提示：C0VID-19 （新型冠状病毒肺炎）； pandemic （流行病）
注意：1. 词数100左右；
2. 可以适当增加细节，以使行文连贯；
3. 结束语已为你写好。
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假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共 有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线，并在该词下面写出修改后的词。
注意：1.毎处错误及其修改均仅限一词；
2.只允许修改10处，多者(从第11处起)不计分。
With time pass by, I will be 18 years old. In other words, I will be a adult. What I want to express most is certainly my appreciate. First of all, I must thank for my parents, with which care and love I have grown up happily. What’s more, I am quite gratefully to the dear teachers I had ever met. It is the teachers have taught me what should be done. Last but not least, having such many lovely friends makes my life quite meaningful and helps you realize the importance of sharing happiness and sorrow with others. I am sure that I will be better with the love given by others.
阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
In August 2014, paleoanthropologist (古人类学家)Yingqi Zhang and his team went down into a sinkhole on the hunt for Gigantopithecus, the largest known primate(灵长类动物)to ever live. They came back out with a mix of bones from the unfortunate 1. (creature) that had fallen into the natural "death trap". None of those bones belonged to the extinct ape, but the team was in for a surprise: The mix included a 22,000-year-old lower jaw from 2.ancient panda. And within its worn edges, the jaw contained 3. is now the world’s oldest sample of panda DNA. Moreover, the genetic evidence 4.(show) that the bone comes from a 5.(previous) unknown lineage of giant panda. This animal may have been specifically adapted to6.(live) in its subtropical home, suggesting that the black-and-white beasts were once much 7.(diverse) than they are today, the authors argue in a paper 8. (publish) in the journal Current Biology. While the 9. (conclude) about panda diversity is probably not revolutionary, the team's work collecting ancient DNA from the degraded fossils is 10. great significance.
My past has caught up with me. It happened five years back when a new friend _______ my digital neighborhood. She knew me in my other _______ before my career in television. And did this young woman have a long _______.
“Hello, Mrs. Luginbill,” said the Facebook, which immediately caught my _______ since I'm Lucy to everyone nowadays. “That's _______ I remember you as a kid from Southgate Elementary,” Jennifer said, using the _______ greeting. “I think I was in first grade.”
Suddenly, as if it were yesterday, I saw the little group of girls gathering around me. I was the “Duty” on playground, the _______ who kept order with a whistle when I wasn't _______ in the classroom. It wasn't a _______ job, standing in the cold winter during break, but it ________ “pocket money” to help after our move from California. A warm coat had been a “must have” ________ when our finances were ________ And in those years, the east side of Washington state saw some of the ________ winters.
Jennifer, the little girl has grown up. She remembered the wild weather — and my coat, too. “It was furry, and the coat almost ________ a happy life we might long for. You were our chosen movie star.” Funny how ________ my viewpoint was back then. I saw little children wanting ________and hugs — and needing their exercise, too. Eventually, I would drive them away to ________. “It is like as a kid you want to stand in someone's light — especially if you ________them,” her Facebook message read.
It was a lesson that I have ________ close even now: What we do today — no matter what our role may be — can ________ brighten another's heart for a lifetime.
1.A.turned to B.moved into C.belonged to D.broke into
2.A.life B.event C.face D.house
3.A.rest B.history C.memory D.journey
4.A.mouth B.eyes C.nose D.ears
5.A.when B.what C.where D.how
6.A.sudden B.vivid C.honest D.formal
7.A.actress B.monitor C.official D.editor
8.A.teaching B.sweeping C.reporting D.filming
9.A.fascinating B.useful C.practical D.physical
10.A.sent B.mixed C.provided D.connected
11.A.gift B.design C.waste D.purchase
12.A.empty B.thin C.developing D.missing
13.A.coldest B.busiest C.funniest D.quietest
14.A.delivered B.grasped C.symbolized D.remained
15.A.wise B.different C.exciting D.boring
16.A.money B.delight C.warmth D.class
17.A.read B.play C.write D.listen
18.A.put up with B.make up for C.keep up with D.look up to
19.A.applied B.found C.fixed D.held
20.A.unknowingly B.obviously C.generally D.unwillingly
