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随时随地学习
随时随地学习
1、Was it in 1969 ____ the American astronaut succeeded ____ landing on the moon?
A. when; on B. that; on
C. that; in D. when; in
2、— Why do you do volunteer work in the North—West?
— I_____ to improve the lives of the children there through my efforts.
A. was trying B. have tried
C. am trying D. tried
3、What best quality ______ most people _______ in others is the willingness to admit one’s mistakes.
A. which, approve B. /, appreciate
C. that, impress D. where, regard
4、If he more careful, he would have got much better results in the finals.
A. had been B. was
C. has been D. were
5、We should place emphasis on development and security, and develop nuclear energy on the base of security.
A. equal B. central
C. superior D. maximum
6、When I got into the office, I found Mr. Green ____ in his work, without noticing my arrival.
A. buried B. burying
C. to bury D. to be buried
7、Every Monday, my English teacher would cheerfully ask me _______ my weekend had been.
A．that B．if C．what D．how
8、--I'm sorry I made a mistake!
-- . . Nobody is perfect.
A. Take your time
B. You're right
C. Whatever you say
D. Take it easy
9、Take care! Accidents _________ happen along this part of the road.
A. will B. would C. must D. Shall
10、Let's keep the surface dirty by putting a cover over it.
A.free from B.far from C.apart from D.away from
11、There are other languages that sound extremely different, _________ they are conveying the same meaning.
A.as though B.in case C.so that D.even though
12、Don't be afraid of difficulties. They can help you ________ experience, and experience can, in turn, broaden your horizons.
A．strengthen
B．intrigue
C．accumulate
D．expand
13、It really matters _______ he treated the latest failure, for the examination is around the corner.
A. if B. that
C. why D. how
14、Off without so much as a goodbye．
A. did Jenny go B. went Jenny
C. Does Jenny go D. goes Jenny
15、Susan has _____ more than 5,000 dollars in the last three months, with which she can buy new bicycles for those poor children.
A．accelerated
B．accompanied
C．accumulated
D．acknowledged
16、If you________ the failed experiences, you would not havemade such a mistake in your homework.
A. refer to B.have referred to
C. referred to D. had referred to
17、Unfortunately, some natural signs which might have helped more people survive the earthquake were ________.
A. abandoned B. ignored
C. deserted D. rejected
18、I ________ a lawyer about the agreement this morning, and he gave me some advice.
A. awarded B. admired C. reminded D. consulted
19、The goods ________ from the Internet are cheaper than ________ we buy in shops.
A.be bought; that
B.bought; those
C.bought; that
D.were bought; the ones
20、Mr. and Mrs. James feel more comfortable on a ship than they would do if they _________ any other way．
A．travel B．are travelling
C．have travelled D．travelled
21、The Nobel Prize in Physiology or Medicine was awarded to Sweden-born geneticist Svante Pääbo, recognizing him for discoveries related to the genomes (基因组) of extinct human groups that cast light on the genetic characteristics unique to present-day humans. The committee said Dr. Pääbo overcame challenges in recovering and analyzing ancient DNA to sequence (测序) the genome of the Neanderthal, an extinct relative of present-day humans. He also discovered a previously unknown human relative, called the Denisova.
Before Dr. Pääbo’s research, understanding of Neanderthals came from analysis of the features of ancient bone remains and from studies of tools and other archaeological artifacts (史前古器物). Dr. Pääbo’s work made it possible to precisely analyze the genetic characteristics of Neanderthals and helped illustrate how different types of humans mixed on the planet during periods of coexistence. Dr. Pääbo’s discoveries have laid the groundwork for research on how ancient gene sequences from extinct relatives influence the function of present-day humans. One example is a gene common among present-day Tibetans that makes those people better adapted to life at high altitude. It can be traced to the Denisovan genome.
Early in his career, Dr. Pääbo became focused on using advanced modern genetic techniques to study the DNA of Neanderthals. But DNA degrades over time meaning that, for ancient specimens (样本), only small amounts are left. When he worked in the University of Munich, he successfully sequenced DNA from a 40,000-year-old piece of bone. The DNA in question was so-called mitochondrial (线粒体的) DNA, a form of genetic material that is shorter, but more plentiful, than the extensive DNA found in the center of a cell. He went on to help establish the Max Planck Institute in Germany, where his research group continued to improve those methods with the aim of sequencing ever larger parts of an ancient genome. Those efforts ended in 2010.
Around the same time, the Max Planck group discovered that a 40,000-year-old finger bone found in the Denisova cave in the southern part of Siberia was unique when compared with all known sequences from Neanderthals and present-day humans. It marked the first time that a new type of human had been identified using only ancient DNA.
【1】What is Paragraph 1 mainly about?
A．How Dr. Pääbo conducted the research.
B．What breakthroughs Dr. Pääbo has made.
C．How the committee contacted Dr. Pääbo.
D．Why Dr. Pääbo researched ancient genomes.
【2】How is Dr. Pääbo’s research different from the previous?
A．Comparing features of genes accurately.
B．Illustrating different mixtures of bones.
C．Collecting many ancient bone remains.
D．Distinguish all living humans at present.
【3】What challenge did Dr. Pääbo overcome during the process of research?
A．Considerable specimens.
B．Poor genetic techniques.
C．Different research groups.
D．Limited DNA information.
【4】What’s the possible significance of Dr. Pääbo’s discovery?
A．Analyzing why present-day humans are better adapted to life.
B．Identifying a new human kind by using modern DNA specimens.
C．Providing the basis for exploring gene sequences unique to humans.
D．Innovating the method for discovering more extinct human relatives.
22、We live surrounded by advanced technology.【1】. You can get the information you want immediately over the Internet. With various technologies surrounding us, it's easy to wonder how ancient people got anything done.
Actually, all of our modern things are based on older technologies. Ancient people didn't necessarily have steel or wheels or, electronic communication. Yet, they built monument (纪念碑) even bigger than Stonehenge. 【2】. And ancient Egyptians built the pyramids — with huge mystery rooms inside.
【3】.The first "kitchen" flames were still older. Ancient human relatives cooked food over fires in Europe 800,000 years ago. The first spear-throwers threw their weapons 279,000 years ago - before modern humans existed.
At first, scientists long believed that the ancients who lived 80,000 years ago were the first to throw spears with stone tips. Then came the discovery of 279,000-year-old stone spear tips in Ethiopia These pushed the date back.【4】.
Scientists have been trying to figure out how ancient people developed their tools and build their cities and monuments.【5】. They are also recreating ancient techniques themselves — from rolling pyramid rocks to testing out ancient tar (沥青) recipes. They detect mystery holes in Great Pyramid of Giza: Using high-tech tools normally reserved for particle-physics research, scientists have found a large hidden hole inside Egypt's Great Pyramid of Giza. They have made some great discoveries, but they know there are still a lot of things waiting to be discovered.
A．Ancient people were really clever
B．Not all of these technologies are useful
C．For example, there are skyscrapers and spaceships
D．They also raised huge stone heads on Easter Island
E．They use modern technologies to explore the ancient places
F．Not all of advanced technologies were limited to modern people
G．And it has been suggested that even prehuman species hunted with spears
23、 As a kid, Joanna Buckley wasn’t interested in science — until she had a chance to try it. That happened when she got a chemistry set for Christmas.
“Over the course of a few weeks, I’d completed every experiment. But in the process, I polluted my parent’s dining room carpet and burnt the kitchen worktop with the spirit burner,” she says.
Now science is Buckley’s job. She works in the chemistry department at the University of Sheffield in England. “I realize, first-hand, how important it is to have something or someone to show you why science is so great,” she says. Now the good news is that citizen science appears.
Citizen science takes the fun of experimenting a step further than Buckley’s at-home chemistry kit. That’s because these experiments are real, looking for novel answers.
“Compared with a one-off experiment, what’s cool about citizen science is that students get that this has a purpose,” Prunuske says. “Students want to do a good job, because they know scientists are going to use the new data in their own research.”
Long agrees. “Kids like that it’s real. And they like that it’s important, that it matters.” Citizen-science projects have made big discoveries. One found a previously unknown galaxy cluster （星系团）. Another project helped assess how much damage a big earthquake had caused in Japan. And one of the first citizen-science projects helped scientists learn where butterflies go every winter.
Some adults worry about teens losing interest in science. That’s one reason they hope that fun, exciting citizen-science projects can help them keep in touch, Long says. And she has some evidence that it’s working, “Last year, we did have a couple of students say, ‘I really think I want to be a scientist now. ’”
【1】What is the purpose of paragraph 2?
A.To support trials can make teens interested in science.
B.To prove failure is the mother of success in science.
C.To state Buckley has a talent for science.
D.To praise Buckley for her strong will.
【2】Why is citizen science more fun?
A.It carries out experiments frequently.
B.It must carry out experiments in groups.
C.It needs to seek for new solutions.
D.It demands to handle complex problems.
【3】What can we know from what Prunuske said?
A.She participated in the experiment.
B.She took pride in what students took up.
C.Citizen science is popular with students.
D.Scientists are willing to employ students.
【4】What is Long’s attitude towards citizen science?
A.Concerned. B.Supportive.
C.Doubtful. D.Unclear.
24、Why are people interested in eating raw foods or whole foods? One reason is that eating these types of food reduces the risk of acid accumulation in your body.
Raw and whole foods are usually digested more efficiently than cooked and refined foods. When we cook foods, we destroy the natural enzymes (酶) that are part of the food in its raw form. These enzymes were intended by nature to help us digest the food. When we consume food without these natural enzymes, our bodies either digest the food improperly or allow too many nutrients to be absorbed into the bloodstream. In both instances, the result is obesity. When too many nutrients are absorbed at once, the body grows fat. Improperly digested food moves slowly through the digestive tract, where it becomes increasingly acidic. To protect its vital organs from this acidic waste, the body changes the acid into fat and stores it safely away from the organs.
Processed foods contain chemical elements, which might confuse the appetite mechanism that tells us when we’ve had enough to eat; as a result, people often overeat. Processed foods also upset the digestive cycle. The body will either identify these foods as allergens and then store them safely away from the organs as fat, or the remains of undigested food will become acidic and enter the bloodstream as acid waste, which will stick to the blood vessel walls and block the passage of vital oxygen and nutrients heading for the body’s cells. The body’s metabolism (新陈代谢) becomes inactive, and the result is weight gain and obesity.
The accumulation of acid in the digestive tract makes digestion increasingly inefficient. When that happens, even healthy foods can become acidic and the food allergies will become more common.
To stop this vicious circle in its tracks, people need to consume food and supplements that will neutralize the acid already accumulated in body. Eating the right types of raw and whole foods can help. It’s also important to restore your enzyme balance. You need to identify and avoid the foods that cause acid accumulation and consume the foods that increase enzyme production. If you truly want to change and help your body heal itself, you need to take an active approach.
【1】It can be inferred from Para. 2 that __________.
A. foods with natural enzymes help people keep fit
B. we’d better be cautious about raw and whole foods
C. it is essential for people to protect their vital organs
D. giving up cooked and refined foods is a new lifestyle
【2】Processed foods are unhealthy because they __________.
A. destroy body’s cells B. stop body’s metabolism
C. may lead to obesity D. are difficult to digest
【3】What is the main purpose of this passage?
A. To warn people of the problem of obesity.
B. To advocate eating more raw and whole foods.
C. To inform people of the harm of processed foods.
D. To tell the differences between raw and processed foods.
【4】The underline word “vicious” in the last paragraph probably means ____________.
A. violent B. progressive C. positive D. harmful
25、When Arun Krishnamurthy was a teenager, he witnessed a pond near his home filled up with trash. The damage to the pond made a great_________to the beautiful pond in his memory. So he decided to do something to_________its original beauty.
In 2007, Krishnamurthy and his team founded the EFI to_________the garbage and restore the natural habitats of birds, frogs and native plants, giving wildlife a chance to_________. Over the past few years, the EFI has _________restoration work on 112 lakes and ponds._________, EFI aimed to restore lakes and ponds. However, its far -reaching influence surprised Krishnamurthy. The work has_________India's water supply for it helps groundwater recharge.
In fact, groundwater is_________to India, accounting for 80% of its water supply. However, overusing water is reducing reserves greatly. Government is required to take some measures, but Krishnamurthy believes it is _________that plays a significant role.
Currently, the EFI is facing a__________when it comes to waste disposal(处理). Up to 95% of the solid waste it __________ from lakes and ponds ends up in landfills. The group is researching on various__________of reusing and recycling more of the trash.
Despite the difficulties, he feels__________not only for India but for the world. He__________everyone to care for lakes and ponds, the dumping(倾倒)of the waste and needs of wildlife. With the right__________, each of us can make a difference to our planet.
【1】
A．contrast
B．difference
C．response
D．contribution
【2】
A．replace
B．regain
C．explore
D．demonstrate
【3】
A．store
B．recycle
C．destroy
D．remove
【4】
A．return
B．escape
C．compete
D．remember
【5】
A．looked into
B．held up
C．carried out
D．cut off
【6】
A．Naturally
B．Originally
C．Finally
D．Actually
【7】
A．changed
B．interrupted
C．benefited
D．reflected
【8】
A．familiar
B．attractive
C．vital
D．cruel
【9】
A．individuals
B．members
C．organizers
D．leaders
【10】
A．choice
B．challenge
C．defeat
D．topic
【11】
A．transports
B．forms
C．rescues
D．collects
【12】
A．standards
B．methods
C．policies
D．consequences
【13】
A．hopeful
B．ready
C．grateful
D．happy
【14】
A．permits
B．teaches
C．warns
D．urges
【15】
A．conclusions
B．assessments
C．intentions
D．occasions
26、假定你是学生会主席李华，一批来自英国的交换生结束了在你校的学习，即将回国。请根据下面的写作提示，用英语写一篇发言稿，代表同学们在欢送会上致辞。内容主要包括：
1. 回顾交流学习的经历；
2. 谈谈收获；
3. 表示祝愿。
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Thank you!
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