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1、These diagrams are especially helpful when we have a concrete problem ______ at hand.
A. be solved B. to solve C. solved D. being solved
2、It is only when an NBA player has aged and been through many battles _____he learns an important lesson;
there is no "I" in "team".
A. after B. before C. that D. what
3、The plan for Xiongan New Area ______ officially on April 1, 2017.
A. announced B. was announced C. announces D. is announced
4、—Could you check my list to see I have forgotten anything?
—No problem.
A. whether B. which
C. that D. what
5、While the kids were making their decisions, they were periodically shown TV _________, some for fast food outlets and some for non-food businesses.
A.programs B.news C.movies D.commercials
6、Faced with economic slowdown, some companies are planning to use robots to ______ human workers to reduce their labor costs.
A. compensate B. substitute
C. symbolize D. discriminate
7、 The factory used 65 percent of the raw materials, the rest of which _____ saved for other purposes.
A.is B.were C.was D.are
8、________ they choose Chinese company is that China has the most advanced technology of high speed railway in the world.
A.When B.That
C.Where D.Why
9、It is only when you can break free from the past ______ a whole new world can open up to you.
A.that B.which C.where D.when
10、I ______ for over 40 minutes, but my food still isn’t ready.
A．am waiting
B．have been waiting
C．was waiting
D．had waited
11、—These apples look really tasty.
—They ______! See the price $5.99 a pound. Very expensive, aren't they!
A.should B.might C.could D.would
12、Since the middle of the last year, the bike-sharing market _____in Beijing.
A. boomed B. was booming C. will boom D. has boomed
13、Since Tom ___ downloaded a virus into his computer, he can not open the file now．
A.readily B.horribly C.accidentally D.irregularly
14、This flu season in the U．S. began earlier than usual and started ________ in midNovember with an increase of influenza B.
A.building up B.piling up C.rising up D.picking up
15、Most of the money for the reconstruction of the quake-stricken town has been allocated by the
government, the rest ______ from the coming charity concerts.
A. to be collected B. having been collected
C. being collected D. to have been collected
16、--- What did she want to know, Tom?
--- She wondered ______ we could complete the experiment.
A. when was it B. it was when that
C. it was when D. when it was that
17、Looking back on his youth, he finally realized that his pain taking effort in Senior Three his bright future.
A.shaped B.had shaped C.was going to shape D.was to shape
18、The entire country was _______ with grief for the eighteen firefighters and one guide who were killed in Liangshan mountain fire.
A.accumulated B.distributed C.spoiled D.overcome
19、The world is not always ______we wish it to be.
A．that
B．which
C．what
D．where
20、Japan is facing an ageing population, with the population ______ from the current 127 million to 90 million.
A. expecting to shrink B. expected to shrink
C. expecting to have shrunk D. expected to have shrunk
21、 When a laptop or smartphone battery starts losing its power, the only options are to buy an expensive replacement, or just keep it plugged in all the time. But a woman Mya Le Thai may have found the answer to this problem.
Thai was frustrated that the batteries for her wireless devices degraded over time, until they failed to charge fully. She did not like having to keep her laptop connected to an electrical outlet to keep it powered on. So, she decided to do something about that problem. At first, she and her team at UC Irvine thought about inventing a new battery. But as they experimented, Thai discovered something that might permit lithium-ion(锂离子) batteries to last forever.
Lithium-ion batteries power most wireless devices. Over time, the batteries lose the ability to hold a charge. Most of these batteries have a life span of about 7,000 charging cycles before they die. One of the reasons lithium-ion batteries degrade is their use of nanowires to carry electricity. Nanowires are extremely thin. A human hair is thousands of times thicker, for example. Nanowires are extremely efficient carriers of electricity, which makes them useful in batteries.
But, Thai had a theory-the nanowires might last longer if covered with a gel(凝胶). She and her team tested this theory. “It was a long process and a lot of work,” Thai said. The team tried many coverings for the wires. PMMA, a type of plastic, was one of them. The nanowires were coated with PMMA and cycled through charges 200,000 times. The PMMA-coated nanowires showed no evidence of damage. The results suggest that batteries could last forever, without losing charging ability.
Thai hopes to continue her research to understand why this gel works so well and to see if any other gel could create better results and she is enjoying the publicity about her discovery. She said she never expected her research to get media coverage. “It’s kind of cool,” she said. “I’m really glad people are showing interest in my work and not just in the work itself, but also in technology and energy.”
【1】What can we infer about nanowires?
A.They last only 7,000 charging cycles. B.They are too weak to carry electricity.
C.They are not suitable to use in batteries. D.Their thinness is a cause of batteries degrade.
【2】What might be Thai and her team’s breakthrough?
A.Coating nanowires in gel. B.A new kind of battery.
C.New materials for batteries. D.A new way of charging batteries.
【3】What may be the best title for the passage?
A.The options of batteries for wireless devices B.A woman invents a life-long battery.
C.Mya Le Thai discovered Nanowires D.The reasons for batteries degrading
22、 Harvard student guides lead Highlights Tours and Quick Stops, available during the fall and spring semesters, except during holidays, winter sessions, and breaks. Fall tours begin on Friday, September 6, and ran through Wednesday, November 27. Spring tours start on Friday, January 31, through Friday, March13 and then from Wednesday, March 25 through Wednesday, April 29. Tours may also be offered in French and Chinese besides English.
Highlights Tours
Fridays, 12:30pm Saturdays, 2:00pm Sundays, 2:00pm
Visit towering Native American totem (图腾)poles and precious artifacts of the ancient world. See life-size casts of Maya monuments and exhibitions such as Wiyohpiyata which is about the 19th century warrior art, and Digging Veritas, which explores the history of Harvard. The themes of the exhibition vary every two days. Visit the museum near the fountain. Tours last 45 minutes, and museum admission is free. For groups of 6 or more, please reserve a scheduled group tour for the day and time of your choice by contacting reservations at 617-495-3216. Each guide may lead a maximum of 20 people per tour. These tours are mainly offered to people of college age or older. Groups with younger people may reserve K-12 school programs through reservation.
Quick Stops
Wednesday, 3:30pm Sundays, 11:30am
Let a Harvard student help you focus on a few special objects in the galleries. Each Quick Stop lasts about 25 minutes and offers replica (复制品)objects to handle while you are engaged in lively conversations. Tell us what the exhibits show you. Topics change daily and there is no age limit, but children between six and ten travelling with adults are free of charge.
For more information, please visit https://www.harvard.edu.
【1】How long does the Fall tours last?
A.More than two months. B.Within two months.
C.Within a month. D.At least three months.
【2】What should a group of 12 people participating in Highlights Tours do?
A.Call the guide at 617-495-3216. B.Make the reservation ahead of time.
C.Take a 10-year-old child if they want. D.Arrive at the museum 45 minutes earlier.
【3】Which of the following is true about Highlights Tours?
A.Wiyohpiyata is closely connected with Native American totem culture.
B.Digging Veritas explores the history of Native Americans.
C.You can get close to the special objects in the gallery.
D.One exhibition is about the art of ancient soldiers.
【4】What is the similarity between the two tours?
A.They have changeable themes or topics. B.They are targeted at tourists of similar ages.
C.They tell about the Maya civilization. D.They allow the visitors to guide the tours.
【5】What can we learn from the text?
A.Tours are offered only in French or Chinese.
B.Visitors can have a tour on Christmas Day.
C.A child aged eight can travel free in Quick Stops with his parents.
D.Highlights Tours offers free museum admission just for children under ten.
23、Vaccines(疫苗) may soon make their first film appearance. Led by expert Maria A. Croyle, researchers have developed a thin sheet that preserves vaccines for long periods without refrigeration. This means the carefully cooled small bottles now used to ship vaccines could potentially be replaced by lightweight films that can be mailed in an envelope and stored on a shelf.
Croyle’s laboratory began developing the technology in 2007. Inspired by amber’s ability to preserve the DNA of insects, the researchers set out to create their own version of the substance by mixing “a lot of sugar and a little bit of salt, much like hard candy,” Croyle explains. The vaccine-containing film is administered by mouth—sweet news for many who dislike needles.
The film is tailored to suit each specific vaccine candidate and provide a protective coating. “We’ve learned over time that the key to really stabilizing whatever the film holds is to have it intermixed with all the components,” Croyle says, adding that the process is quick and uses affordable, standard equipment. “We really wanted to come up with something that would be transferable to developing countries.”
Immunization(免疫) programs depend heavily on keeping vaccines cold(2℃-8℃) as they are transported, sometimes over thousands of kilometers to far-away locations. Delivery can be difficult and costly, and transport disruptions can cause the vaccines to be ineffective.
But this new product can store live viruses, bacteria and antibodies for several months at 20℃. In a paper published in Science Advances, the scientists show that the live viruses in one vaccine were preserved in the film even after 36 months. They also find that a flu vaccine suspended in their film compares favourably with a traditional flu shot(流感预防针). “The study demonstrates early proof of concept for an exciting platform for vaccine product development,” says Lisa Rohan, a pharmacologist, who was not involved in the study. She also notes that each vaccine type would need a custom formulation(配方) for future stages of development.
Finding partners to mass-produce for clinical trials is the researchers’ most pressing problem, Croyle says. They are also exploring packaging methods to keep their films stable up to 40℃.
Size is a major advantage—a letter-sized sheet of the film can carry more than 500 doses(剂) of vaccine, about 1⁄900 the weight of the same amount of traditional doses. By making it easier and cheaper to ship and preserve vaccines efficiently, Croyle says, the technology could vastly improve immunization rates the world over, particularly in middle- to low- income countries.
【1】What can we learn about the film?
A．It contains animal’s DNA.
B．It will replace vaccines.
C．It comes in different flavours.
D．It can hold bio-products.
【2】According to Paragraph 3, we can learn about the film’s ________.
A．key component
B．development schedule
C．possible advantages
D．transportation requirements
【3】The author mentions Lisa Rohan’s words to ________.
A．advise personalizing vaccines
B．suggest the product is promising
C．prove the study is supported widely
D．stress the functions of a new platform
【4】What will be the next urgent task for Croyle’s team?
A．Advertising the film worldwide.
B．Improving the film’s capacity.
C．Reducing the shipping cost.
D．Seeking ideal manufacturers.
24、 In this Pennsylvania city, Pittsburgh is shrinking but getting wealthier. Since 2000, its population has declined by 95,000 while its income per capita (人均) has shot up 24 percent. The trend is taking hold in many other cities, like Buffalo in New York, Providence in Rhode Island and New Orleans.
Some of these areas have created more high-paying jobs in energy, health care or education. Others have managed to reshape their producing industry for a new economy. Higher-paying jobs have a greater effect because they create demand for additional services. "The story in Pittsburgh is very positive, and other areas are looking at it as an example of the transformation that might be possible,” said Guhan Venkatu, who wrote an economic history of the area called “Rust and Renewal” for the Federal Reserve Bank of Cleveland.
Carnegie Mellon University and the University of Pittsburgh have helped bring tech jobs and innovation(革新) to the area by sponsoring tech centers that help graduates start companies without moving to Silicon Valley or San Francisco. This has helped keep Pittsburgh's educated young population growing even as the entire population in the city has dropped.
Pittsburgh has more STEM (science, technology, engineering and math) jobs than other shrinking cities, about 80, 000 or 7% of all jobs. STEM jobs add productivity and income growth to the area. Manufacturers of high-tech medical equipment in the Pittsburgh area also have doubled employment in the last 10 years.
However, some experts question whether growing income per capita can really make up for a declining population. According to Patrick Adler, a researcher at the University of Toronto, population loss does matter if it means lower-skilled workers have fled because of a lack of opportunity. What's more, high-paying jobs in education and health care can disappear if the population declines too greatly. So it'd be wise to find ways to increase the population.
【1】In what aspect does Pittsburgh set a good example?
A. Transforming old energy into new energy. B. Prohibiting the manufacturing.
C. Creating more well-paid jobs. D. Sponsoring higher education.
【2】How do some academic institutions help with the local economy ?
A. By helping to attract more talents from home and abroad.
B. By providing much technical support to local companies.
C. By hosting tech centers to allow local educated graduates to stay.
D. By assisting in employing a large number of educated youths.
【3】Why is Patrick Adler mentioned in the last paragraph?
A. To suggest increasing high-paying jobs.
B. To raise doubts about growing income per capita.
C. To tell a reason why lower-skilled workers flee.
D. To show the disadvantage of a declining population.
【4】What can be a suitable title for the text?
A. Why Some Cities Are Losing People but Getting Wealthier
B. How Fast Job Growth Is Related to Population Growth
C. How Less-crowded Cities Plan Their High-tech Economy
D. Why Some Cities Are Suffering From a Shrinking Population
25、In December 2004, I had just become a professional photographer and was working on a project about the Chao-Ley tribe on a small island in southern Thailand.
One morning, I was due to _________ with a group of six Chao-Ley fishermen in a small boat. The sea was totally _________.
About 20 minutes after our departure, one of the fishermen pointed to a small white spot far in the distance. It was getting bigger and bigger very quickly. This was a tsunami wave _________ through the ocean like a tornado. We were _________. I began to feel really _________.
At some point the captain took control. He told the six of us where to sit, so we would _________ out the boat. My _________ was in my backpack. I wanted to _________ the scene, but I couldn’t. Any _________ would imbalance the boat.
Suddenly there was a huge noise. The giant wave hit the boat, but in the split second of ____________, the incredibly skilled captain ____________ to swerve (使突然转向) us up and onto the wave. We ____________ it for a few seconds. Then the boat glided from the ____________ of the wave down into safe waters.
I’ve been going back to Southeast Asia almost every year since. The ____________ I wanted to take on the boat remains “the one that got away” — I think every photographer has one. But mine ____________ my life.
【1】
A．settle down
B．turn up
C．set out
D．slide in
【2】
A．still
B．vast
C．rough
D．different
【3】
A．roaring
B．speeding
C．exploding
D．cycling
【4】
A．stuck
B．linked
C．dragged
D．pushed
【5】
A．disappointed
B．confused
C．surprised
D．scared
【6】
A．hold
B．balance
C．figure
D．sort
【7】
A．camera
B．phone
C．laptop
D．notebook
【8】
A．confirm
B．restore
C．prove
D．capture
【9】
A．process
B．response
C．movement
D．sign
【10】
A．accident
B．impact
C．influence
D．power
【11】
A．guaranteed
B．struggled
C．determined
D．managed
【12】
A．smoothed
B．challenged
C．surfed
D．explored
【13】
A．corner
B．side
C．center
D．tip
【14】
A．wave
B．memory
C．picture
D．backpack
【15】
A．changed
B．directed
C．tested
D．exposed
26、阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。续写 的词数应为150左右。
I had never been more anxious in my life. I had just spent the last three endless hours trying to get to the airport so that I could travel home. Now, as I watched the bus driver set my luggage on the airport sidewalk, I realized that my anxiety had only just begun.
This was my first visit alone to the international terminal of the airport, and nothing was familiar. I couldn’t make sense of any of the signs. Where was the check-in counter? Where should I take my luggage? I had no idea where to go, feeling as if I were deaf and blind and stupid. I began to panic. What time was it? Where was my plane? I had to find help because I couldn’t be late!
I tried to ask a passing businessman for help, but my words all came out wrong. He just frowned and walked away. What had happened? I had been in this country for a whole semester, and I couldn’t even remember how to ask for directions. This was awful! Another bus arrived at the terminal, and the passengers came out carrying all sorts of luggage. Here was my chance! I could follow them to the right place, and I would not have to say a word.
I dragged my enormous suitcase behind me and followed the group. We finally reached the elevators. Oh, no! They all fit in it, but there was not enough room for me. I watched in despair as the elevator doors closed. I was abandoned again! I had no idea what to do next. I got on the elevator when it returned and stared at all the buttons. Which one could it be? I pressed button 3, because I thought I saw those passengers pressed 3, though it was no more than a quick glance. The elevator slowly climbed up to the third floor and came to a stop. There were no check-in counters! I looked around shyly, only to find an elderly man standing at the corner. He was an airport employee.
Paragraph 1:
Tears formed in my eyes as I saw the empty hall and realized that I would miss my plane. ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Paragraph 2:
When I turned to thank him for all his help, he was gone. ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
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