1 . “Have you ever considered giving up during a race?” a runner asked me during the Geneva Marathon. We’d
“I can’t think of a single race when I haven’t!” I answered
“If I give up now, I’ll
“I may not finish this race before the 12-hour
A.gone away | B.fallen behind | C.taken off | D.come back |
A.lift | B.break | C.lower | D.feel |
A.confidently | B.proudly | C.honestly | D.rudely |
A.seize | B.relate | C.make | D.copy |
A.stop | B.rise | C.continue | D.quit |
A.opportunity | B.mistake | C.practice | D.test |
A.lifelong | B.forgotten | C.distant | D.disappointing |
A.thoughtful | B.unwise | C.careful | D.difficult |
A.leave | B.get | C.spare | D.offer |
A.simple | B.relaxing | C.enjoyable | D.tiring |
A.work | B.matter | C.appear | D.exist |
A.Fortunately | B.Surprisingly | C.Regrettably | D.Undoubtedly |
A.headline | B.limit | C.journey | D.work |
A.runner | B.judge | C.worker | D.student |
A.concluded | B.interrupted | C.failed | D.followed |
2 . An experimental treatment rejuvenates (使...恢复活力) the immune (免疫的) systems of older mice, improving their ability to fight infections. If it works in humans, the treatment could reverse (逆转) age-related decreases in immunity that leave older adults susceptible to disease.
These decreases may be due to changes in our blood stem cells which can develop into any type of blood cell—including key parts that make up the immune system. As we age, a larger proportion (比例) of these stem cells tend to produce some immune cells over others, says Jason Ross at Stanford University in California. This imbalance damages the immune system’s defenses.
Ross and his colleagues have developed a treatment using antibodies (抗体), which are proteins that recognize and attack certain cells to target these abnormal stem cells. They tested the treatment in six mice between 18 and 24 months old, which is roughly equal to an age of 56 to 70 years in humans.
A week after receiving an antibody injection, the mice had about 38 percent fewer of these abnormal stem cells than six mice of the same age that didn’t receive the treatment. “You can think of it as kind of turning back the clock,” says Ross. “We’re making the proportion of these immune cells more similar to those of a younger adult mouse.”
To test if the changes resulted in a stronger immune system, the researchers vaccinated (打疫苗) 17 older mice against a mouse virus. Nine of these mice had received the antibody treatment eight weeks earlier. The researchers then infected (感染) the mice with the virus. Two weeks later, they measured the number of infected cells in the animals and found that nearly half of the treated mice had cleared the infection, compared with only one of the eight untreated mice.
The findings indicate that the antibody treatment rejuvenates the mouse immune system. “Since humans, like mice, also see abnormal blood stem cells increase with age, a similar antibody treatment may rejuvenate our immune systems,” says Ross.
1. What does the underlined word “susceptible” in paragraph 1 mean?A.Strongly resist. | B.Easily suffer from. |
C.Completely unaffected by. | D.Highly immune to. |
A.Changes in our nervous system. |
B.An increase in antibodies in our body. |
C.Changes in blood stem cells. |
D.A decrease in the number of immune cells. |
A.By analyzing changes in their lifestyle. |
B.By observing differences in their behavior. |
C.By conducting blood tests to measure immune cell counts. |
D.By counting the number of infected cells after virus contact. |
A.The antibody treatment has no effect on the mouse immune system. |
B.The antibody treatment increases the risk of infections in mice. |
C.The antibody treatment only works on young mice, not older ones. |
D.The antibody treatment improves the mouse immune system. |
3 . It’s not hard to see how welcoming Berlin is to families. There are kid-orientated (儿童导向的) cafes and imaginatively themed playgrounds. Parks and woodlands provide plentiful picnicking opportunities and, in hot weather, lakes offer sunbathing.
Getting around is easy, too. The city’s neighborhoods are walkable, and its public transport network efficient and cheap. Its wide, flat streets, bike lanes and family-friendly cycle hire make two wheels a great way to explore while taking in the city's impressive sights—all of which make Berlin a memorable family destination.
What to do with toddlers (学步的儿童)A popular neighbourhood with families, Prenzlauer Berg has playgrounds, parks and pretty streets with shops selling kids’ clothes and toys, as well as family-friendly cafes. For those gifted in music, the Frank Gehry-designed concert hall at the Barenboim-Said Academy hosts morning concerts for babies under 12 months and afternoon concerts for one-to-five-year-olds. Meanwhile, central Tiergarten is a wonderful spot for walking, picnicking or kicking a ball in the grass; wander through the woods, spotting cultural sights. Of the park’s six playgrounds, the one close to Thomas-Dehler-Strasse is best equipped for toddlers.
What to do with tweens and teenagersThe Deutsches Technik museum will absorb transport and technology fans for hours. For those ready to learn about the darkest chapter of German history, the Topography of Terror museum is located on the site of the former SS and Gestapo (盖世太保) headquarters. Checkpoint Charlie is a few minutes walk away and the Memorial to the Murdered Jews of Europe can be reached in around 20 minutes on foot. To experience a little of Berlin's alternative side, Bearpit Karaoke is held on Sundays at Mauer park.
1. Which of the following is NOT mentioned as a family-friendly activity in Berlin?A.Visiting kid-oriented cafes. |
B.Enjoying concerts at the Barenboim-Said Academy. |
C.Shopping for kids’ toys in stores. |
D.Swimming and surfing in lakes. |
A.Visiting museums. | B.Picnicking and walking. |
C.Riding bikes. | D.Shopping for toys. |
A.Deutsches Technik museum | B.Prenzlauer Berg |
C.Topography of Terror museum | D.Mauer park |
1. What is the speaker trying to do?
A.Start a school magazine. |
B.Look for some part-time editors. |
C.Get materials for the school magazine. |
A.Jokes. | B.Photos of school life. | C.Drawings and paintings. |
A.The sports page. | B.The center page. | C.The diary page. |
A.The football team. | B.The basketball team. | C.The tennis team. |
1. Who usually cooked New Year’s dinner?
A.The man. | B.The woman. | C.The man’s parents. |
A.Shop for food. | B.Make a dinner reservation. | C.Take care of children. |
A.What to have at New Year’s dinner. |
B.Where to have New Year’s dinner. |
C.When to prepare New Year’s dinner. |
1.清明节时间:每年的4月4—6日,可追溯到2000年前
2.节日的意义和习俗:1)追思亲人2)祭祖扫墓3)出游踏青
注意:1.字数要求在100字左右:
2.内容完整,书写工整,表达通顺,语言连贯。
______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
1. Who first made the nickname “The Big Easy” popular in the early 1970s?
A.A newspaper writer. | B.A crime novel writer. | C.A politician. |
A.Gentle and slow. | B.Easy-going. | C.Quick and busy. |
A.For its yearly music festival. |
B.For its wild celebrations each year. |
C.For its shape. |
A.NOLA. |
B.The Crescent City. |
C.The Birthplace of Rock and Roll. |
1. When should you arrive when invited to a party at 8:00 in America?
A.From 8:00 to 8:30. | B.From 8:30 to 9:00. | C.From 9:00 to 9:30. |
A.Music. | B.Cigarettes. | C.Games. |
A.Beer. | B.Wine. | C.Cookies. |
A.He will attend a party. |
B.He has never been to a party. |
C.He is good at dancing. |
In February, I traveled to York in the UK to participate in the Jorvik Viking Festival, Europe’s largest Viking festival, which
In the city center were hundreds of people with swords, axes and helmets, all dressed as Vikings. Some played old instruments as more than a hundred Vikings took part in a great march through the city center. Stalls were busy selling Viking tools, costumes and mead, an old Viking wine
According to the Archeology in Europe Educational Resources website, the Vikings conquered York in
Today, there is a great fascination in the UK with Viking history. Besides the Jorvik festival, people hold Viking weddings
10 . In America, the “Big Dig”, a highway project that resulted in a mess of traffic in the centre of Boston for years, came in five times over its initial budget. Even the Germans get huge projects wrong. Conception to operation of Berlin Brandenburg Airport has taken 30 years, with seven missed opening dates. The airport ended up costing $8.2 billion. However, the original estimate was about $2.7 billion.
Huge projects like Berlin Brandenburg Airport are the subject of an amusing new book called How Big Things Get Done by Bent Flyvbjerg and Dan Gardner. Mr. Flyvbjerg sets up a database of over 16, 000 projects and data analysis reveals that only 8.5% of the projects meet their initial estimates on cost and time, and 0.5% of them achieve what they set out to do on cost, time and benefits.
Over-optimistic time and cost estimates originate from both psychological and political perceptions: the reliance on intuition (直觉) rather than data, and a problem that Mr. Flyvbjerg calls “strategic misrepresentation”. This is when budgets are intentionally reduced in order to get things going. And once the projects are under way, they will not be stopped, because money spent on them will thus be wasted.
Mr. Flyvbjerg speaks highly of Pixar’s methodical approach to developing and testing films in great detail before they go into production. He also tells the story of how Frank Gehry’s well-developed architectural models helped ensure the success of the Guggenheim Museum in Bilbao. Narrowing down the producing window of a project before it is actually carried out reduces the probability of unexpected events.
Big customized projects are particularly likely to run into trouble. However, the more a project can be divided into standardized processes, the better its prospects are. Projects run into problems for specific reasons as well as general ones: Britain’s trouble is not something that China has to worry about, for instance. But the iron law is that if you plan strictly and standardize where possible, you are less likely to dig yourself into a hole.
1. How does the author introduce the topic of the passage?A.By making a contrast. | B.By giving an explanation. |
C.By presenting examples. | D.By showing an experience. |
A.Projects’ success rates can be estimated. |
B.Projects’ desired outcome can’t be achieved. |
C.Most projects suffer overspending and delays. |
D.Most projects lack comprehensive data analysis. |
A.Failures in decision-making. | B.Methods of reducing massive costs. |
C.Strategies for getting work done. | D.Reasons behind inaccurate estimates. |
A.Planning thoroughly in advance. |
B.Analyzing specific and general reasons. |
C.Focusing on efficiency of projects. |
D.Drawing lessons from former experiences. |