Although human evolution has _______ in the past 10,000 years, we are changing our environment faster still.
A. linked up B. loaded up
C. sped up D. split up
高三英语单项填空中等难度题
Although human evolution has _______ in the past 10,000 years, we are changing our environment faster still.
A. linked up B. loaded up
C. sped up D. split up
高三英语单项填空中等难度题查看答案及解析
Believe it or not, the size of the human brain has become smaller over the past 20,000 years. Scientists argue over whether this means we are becoming more or less intelligent as a species.
“I’d call that a major downsizing in an evolutionary eye blink (眨眼),” John Hawks told Discover magazine.
Why is the brain becoming smaller?
There are different theories to explain it. One is that tens of thousands of years ago, before the decline began, to survive in cold and dangerous conditions, humans needed a stronger and larger body and therefore, a larger head. Also they had to chew the tough meat of rabbits, foxes and horses. As conditions improved, the brain stopped growing, according to supporters of this theory.
Another theory comes from a recent study by David Geary and Drew Bailey. They found that brain size decreased as population density(密度) increased.
“As complex societies appeared, the brain became smaller because people did not have to be as smart to stay alive.” Geary told AFP.
But smaller brain size does not necessarily mean that modern humans are less smart than their ancestors. “Modern humans simply developed different, more complex forms of intelligence,” said Brian Hare.
Hare’s studies focus on two types of great apes: chimpanzees and bonobos. Both are much like humans, but are physically quite different from one another. The bonobo has a smaller brain than the chimpanzee, and is also much less aggressive and more tolerant.
“When it comes to working out a problem,” Hare said, “chimpanzees are much less likely to accomplish it if it involves working together. Not so with bonobos.”
The smaller brain in modern humans may be evidence that we can cooperate,” Hare told the US National Public Radio.
1.Which of the following words can be used to replace the underlined word in Paragraph 2?
A. speed B. increase
C. decline D. change
2.We can learn from the passage that ____________.
A. the size of human brain has something to do with many factors
B. the brain size increases because of the increase of population density
C. the abilities of the bonobos and the chimpanzees are almost the same
D. modern humans can certainly do teamwork better than other species
3.According to Brian Hare, _____________.
A. bonobos are much likely to cooperate better than chimpanzees
B. chimpanzees tend to work well with others
C. modern humans are less smart their ancestors
D. small brains are certainly connected with intelligent beings
4.Which of following is probably the best title of the passage?
A. Bonobo or Chimpanzee—Which Smarter?
B. Smaller Brain--Less Intelligent?
C. Human and Animal—More Intelligent?
D. Human Brain-Why Downsizing?
高三英语阅读理解中等难度题查看答案及解析
China’s economic development has made ______ rapid progress in the past 10 years, and young people have made ______ great contribution to this progress.
A. a; a B. the; / C. /; a D. /; /
高三英语单项填空中等难度题查看答案及解析
China’s economic development has made ______ rapid progress in the past 10 years, and young people have made ______ great contribution to this progress.
A. a; a B. the; / C. /; a D. /; /
高三英语单项填空中等难度题查看答案及解析
The time he has devoted in the past 10 years______ the disabled is now considered__________ of great value．
A．to helping; being B．to helping; to be
C．to help; to be D．helping; being
高三英语单项填空中等难度题查看答案及解析
The time he has devoted in the past 10 years______ the disabled is now considered__________ of great value.
A. to helping; being B. to helping; to be
C. to help; to be D. helping; being
高三英语单项填空中等难度题查看答案及解析
Over the past 10 years, Huawei has invested a total of 4 billion U.S. dollars in 5G, ______ it a leader in 5G chips, products and networks.
A.making B.to make C.make D.made
高三英语单项填空困难题查看答案及解析
The discovery of a dwarfed (矮个的) “human being” who lived in Flores, Indonesia, up to 18,000 years ago is changing the way we think about the human family. This “Flores Human” was three foot tall and her brain was smaller than that of the average chimp (黑猩猩), yet she and her relatives apparently lived fully human lives. They seem to have made tools, worked together to find food and cook it, and perhaps even buried their dead with ceremony.
It was a major surprise to find tools associated with the new human family member. The tools are like those formerly seen only with European fossils (化石 ) from our own species, Homo sapiens (智人 ), and the oldest of them were made 94,000 years ago. Homo sapiens is thought to have arrived in the island about 40,000 years ago, much too late to be responsible for the tools. If this tiny human made the tools, the inside structure (结构 ) of its brain must have been more like our own than a chimp’s, despite being just a third the size of ours.
This “new human” was suspected to be a dwarfed branch of Homo erectus (直立人 ). When creatures are separated in regions with rare resources but few enemies, being big is a disadvantage, and evolution tends to shrink them, a process known as island dwarfing. Could natural selection make a human smaller while keeping － even improving － mental ability? Quite possibly, believes Christopher Wills of the University of California.
Has the “Flores Human” even shown the ability of language? “I find it difficult to imagine that people could make tools, use fire, and kill large animals without fairly advanced communication,” Wills says. Did “Flores Human” possess the basic components of human culture － such as the burying of the dead with ceremony? Emiliano Bruner of the Italian Institute points out that Indonesia’s hot, wet environment is bad for fossilization. It is reasonable to assume, he says, that the 18,000-year-old bones of the most complete Flores woman were well-preserved because she was buried with special care.
1.According to the passage, “Flores Human” __________.
A. lived a partly human life
B. was a branch of Homo sapiens
C. used tools before Homo sapiens arrived
D. had a brain as large as a common chimp’s
2.The underlined part “this tiny human” in Paragraph 2 refers to __________.
A. a chip B. Flores Human C. Homo sapiens D. Homo erectus
3.This passage mainly talks about __________.
A. the tools made by “Flores Human”
B. the language used by “Flores Human”
C. the evolution of “Flores Human”
D. the major surprising findings about “Flores Human”
4.According to the passage, it is believed that “Flores Human” __________.
A. was dwarfed by its enemies
B. could use language
C. left a lot of fossils in the hot and wet environment
D. reached Flores 40,000 years ago
高三英语阅读理解中等难度题查看答案及解析
Tianwu has climbed Huashan more than 3, 000 times in the past decade. He is a _______ , transporting goods up the slopes on his back, for a living. But he is most _______ for his disability: He has only one arm.
He _______ his left arm in an accident in 1992 at the coal mine. With two young children and parents to _______, he was working overtime that day when a pulley brake _______ after that he opened a store, but it went bankrupt from too many _______ sales. _______ his hard work, he was left with nothing but debts. Then he heard about bearers for Huashan Mountain from a friend and thought it would be an _______ job.
His first job was to _______ 30 kilograms of goods to High Ladder. He had a companion who ________ mid-way, but he finished his job with ________ pain in his knees. But as he ________ experience through the years, he has developed his own ________ for climbing the mountain.
Now he carries 60 kilograms of goods up the mountain every day-1 kilogram more than his own body weight. ________, he makes three to four trips each day to and from." I ________ each step very carefully and have never had any accident in the past 10 years," He said.
Being a bearer is a tiresome and dull job in many people's minds, but he enjoys himself. He appreciates and remembers the calligraphy ________ in the rocks and copies them. His favorite one is, "Though heavy snow falls down on verdant pines, the pines still stand ________." He once said," I'd like to stay here because the mountain pays my hard work ________."
"I don't lament for my ________ days and will not fear the future," He said. The painstaking job has given him a strong ________.
1.A.carrier B.guide C.bearer D.servant
2.A.noted B.famous C.well-known D.pitied
3.A.destroyed B.damaged C.disabled D.lost
4.A.stand for B.live for C.look for D.care for
5.A.failed B.fell C.disappear D.broke
6.A.casual B.credit C.chain D.constant
7.A.Besides B.Regardless C.Except D.Despite
8.A.ideal B.satisfying C.loose D.outstanding
9.A.take B.carry C.fetch D.load
10.A.stopped B.paused C.quitted D.rested
11.A.hard B.intense C.severe D.serious
12.A.received B.gained C.established D.desired
13.A.way B.technique C.procedure D.assistance
14.A.Nevertheless B.Therefore C.Moreover D.thus
15.A.care B.mind C.follow D.watch
16.A.painted B.printed C.written D.carved
17.A.straight B.still C.high D.verdant
18.A.back B.off C.away D.up
19.A.old B.last C.past D.hard
20.A.body B.health C.heart D.mind
高三英语完形填空中等难度题查看答案及解析
________small，the company has about 1,000 buyers in over 30 countries.(2013·天津，5)
A．As B．If
C．Although D．Once
高三英语单项填空中等难度题查看答案及解析