In September of 2016, the G20 summit will be held in Hangzhou, ________ theme is to stress innovation, reform and development.

A. where B. which C. when D. whose

I remember when I was a child ________ with how many toys my cousin had.

A. impressing B. to impress

C. being impressed D. impressed

—How can I live my dreams in a short time?

—Be practical. Between you and your dreams ________ a lot of hard work.

A. stand B. stands

C. is standing D. are standing

Mr Simmons always tries to make me keep in mind that how much easier my life ________ if I were better organized.

A. will be B. would have been

C. would be D. will have been

Learning from ________ mistakes can help us keep conscious and avoid repeating them in the days to come.

A. previous B. curious C. obvious D. ridiculous

—How come Tom picked a quarrel with his wife?

—________? We also have the occasional argument.

A. What’s on B. How’s that

C. Who doesn’t D. Why not

请认真阅读下面短文, 从短文后各题所给的A、B、C、D四个选项中, 选出最佳选项, 并在答题纸上将该项涂黑。

How many licks (舔) does it take to get to the center of a Tootsie Pop (棒棒糖)?

The first time I heard this in the Tootsie Pop commercial, I was five years old. I immediately started _________ and counting. After about two hundred licks or so, I stopped. The _________ of the chewy center had proven to be too great, and I _________ my way through the hard shell (外壳) to the very center. Besides, I _________ knew how many licks it took to get to the center—three. That’s how many licks it took the owl (猫头鹰) in the commercial to get to the center, so that, to me, was the _________ answer.

In high school, I held to the Tootsie Pop _________ . To me, the answer was still always three licks.

In my freshman year, I joined the Model United Nations _________ in my school. The Chair position had _________ the center of the Tootsie Pop and my _________ had become various other students. The first so-called “owl” was Eric who had luckily _________ the prestigious (声望高的) Chair position. So, I decided, _________ Eric reached the center in only one lick, that’s how many licks it should take me. I went to the tryouts with a view to obtaining the position but _________ .

At the end of my sophomore (高二) year, a new owl named Iris had _________ achieved the chair position after trying twice. I began working hard again. But then again, I did not make a _________ of it.

Now, slightly frustrated after _________ two owls, I found a new owl, Evan. It had taken him three licks to get to the “center”. Three was all I could _________. It was widely known that senior year was the _________ year to become Chair. I thought about _________ the program, but on second thoughts, I decided to continue.

Eleven years later, I visited the official Tootsie Pop website to find the real answer to the question that had _________ me my entire high school life. I finally understood. However many licks it takes to get to the center of the Tootsie Pop depends on however many licks I _________ to take—not how many the other owls take.

1.A. dreaming B. admiring C. licking D. chewing

2.A. temptation B. appearance C. power D. discovery

3.A. fought B. followed C. made D. bit

4.A. seldom B. never C. already D. nearly

5.A. brief B. right C. random D. temporary

6.A. commercial B. plan C. philosophy D. custom

7.A. program B. conference C. title D. activity

8.A. become B. changed C. determined D. explored

9.A. shell B. hope C. owl D. companion

10.A. noticed B. shifted C. improved D. landed

11.A. unless B. if C. before D. until

12.A. failed B. quitted C. survived D. struggled

13.A. yet B. even C. still D. also

14.A. promise B. success C. point D. joke

15.A. interacting with B. frightening away C. going through D. dealing with

16.A. afford B. hold C. admit D. expect

17.A. middle B. gap C. last D. initial

18.A. winning B. criticizing C. quitting D. arranging

19.A. motivated B. troubled C. attracted D. instructed

20.A. learn B. agree C. refuse D. choose

Computer power is moving into the “cloud”—networks of data centres that use the Internet to supply all kinds of services, from e-mail and social networks to data storage and analysis.

The rise of cloud computing is rapid and causing huge changes in the tech industry. The old guard is suffering: this week’s $67 billion merger (合并) between Dell and EMC, makers of computers and storage devices respectively (分别), was a marriage forced by the rise of the cloud. Disruptive (捣乱的) newcomers are blooming: if Amazon’s cloud-computing unit were a stand-alone public company, it would probably be worth almost as much as Dell and EMC combined.

The gains for customers have been equally dramatic. Compared with older IT systems, cloud computing is often much cheaper. It adds tremendous flexibility: firms that need more computing capacity no longer have to spend weeks adding new servers and installing software. In the cloud they can get hold of it in minutes. Their applications can be updated continually, rather than just every few months. Individual users can reach their e-mails, files and photos from any device. And cloud services also tend to be more secure, since providers know better than their customers how to protect their computing systems against hackers.

But cloud computing makes one problem worse. In the old IT world, once a firm or a consumer had decided on an operating system or database, it was difficult and costly to switch to another. In the cloud this “lock-in” is even worse. Cloud providers go to great lengths to make it easy to upload data. They accumulate huge amounts of complex information, which cannot easily be moved to an alternative provider.

Cloud firms also create a world of interconnected services, software and devices, which is convenient but only for as long as you don’t venture (冒险) outside their universe. Being locked in to a provider is risky. Firms can start to tighten the screws by increasing prices. If a cloud provider goes bust (崩溃), its customers may have trouble getting back their data.

These risks have already caused a debate about whether the cloud needs stricter regulation. Some European politicians want to force cloud providers to ensure that data can be moved between them. That is too heavy-handed, because strict rules will inhibit (阻碍) innovation in what is still a young industry. The history of computing suggests that common standards may well appear naturally in response to customers’ demands—just as in personal computers, where it is now much easier to use the same files on different systems.

In the meantime, a few commonsense measures can reduce the risk of lock-in. Firms that use more than one cloud provider to host their data are less affected. So are those that keep their most important information in their own data centres. Consumers can take precautions, too. Some services are better than others at enabling users to move data between providers (Google does well on this score). Cloud computing promises its users many benefits, but don’t mistake it for some sort of digital heaven.

1.The author takes “the merger between Dell and EMC” for example to show ________.

A. the influence of cloud computing on computer and storage device makers

B. the miserable sufferings of old computer companies

C. the rapid development of new computer companies

D. the interaction between old companies and newcomers

2.With wide applications of cloud computing customers can ________.

A. pay less for the older IT systems

B. gain more computing capacity quickly

C. know better about defeating the hackers

D. install software within weeks

3.The problem of “lock-in” can be dangerous because ________.

A. it should ensure data can easily be moved to another provider

B. it can create a network of services connected with devices

C. it may make it difficult for customers to recover their data

D. it will discourage an argument about stricter rules

4.It can be inferred from the last two paragraphs that ________.

A. the European politicians’ advice is perfect

B. customers’ demands play a role in setting standards

C. lock-in is caused by firms’ storing information in their own centres

D. Google enables users to provide services and move data

5.Which of the following sayings can best express the main idea of the passage?

A. Everything has its time and that time must be watched.

B. The grass looks greener on the other side of the fence.

C. A candle lights others and consumes itself.

D. Every white has its black, and every sweet has its sour.

Scientists have exactly discovered the set of brain cells involved in making risky decisions, and have been able to control them in rats using targeted light. By changing the activity of the cells they were able to change the behaviour of risk-taking rats to avoid risk, hinting the approach could in future be used to treat people with impulse (冲动) control problems.

Risk-taking is a key part of survival, knowing when to take a chance could pay off—such as moving to a new area to look for food when pickings are slim.

While all animals need an element of risk, the preference towards it varies between individuals. Researchers found this variation, which determines how risk-averse an individual is, is regulated by brain cells in a region of the brain called the nucleus accumbens. This cluster of neurons releases the neurotransmitter dopamine, which regulates the brain’s reward and pleasure centres.

Previous studies have shown that in patients with Parkinson’s disease, taking medication which blocks specific dopamine receptors (DR2) (受体) leads to increased gambling (赌博) behaviour and risk taking behaviour. In studies with rats, researchers were able to use a technique called optogenetics (光遗传学)—which uses light sensitive proteins to change the activity of cells—to modify cells with DR2 in the nucleus accumbens.

Rats were trained to choose one of two levers, offering them a choice between a “safe” or “risky” choice. The safe option resulted in a small, but consistent amount of a sugar water treat. But the risky choice consistently delivered smaller amounts of sugar water, with the occasional large pay off—essentially encouraging the animals to gamble for a bigger prize. Around two-thirds of the animals weren’t keen on risk, opting for the safe option, but the remaining third were risk-seekers. Brain scans of the animals showed that those with low levels of DR2 consistently went for the gamble.

But using pulses of light to stimulate (刺激) the DR2 cells and improve their activity could cause the risk-takers to play it safe and opt for the guaranteed but less rewarding option. Once the light-pulses stopped, the risk-takers returned to their gambling strategy.

In the risk-averse animals, stimulating the same cells had little to no effect.

Professor Karl Deisseroth, of Stanford University in California, said: “Humans and rats have similar brain structures involved.”And we found a drug known to increase risk preference in people had the same effect on the rats. So every indication is that these findings are relevant to humans. “Risky behavior has its moments where it’ s valuable. As a species, we wouldn’t have come as far as we have without it.”

1.The variation in people’s preference towards risks is directly regulated by ________.

A. nucleus accumbens B. light sensitive proteins

C. neurons D. dopamine

2.From the experiment with rats, we can conclude that ________.

A. the lack of DR2 cells results in a safe option

B. the levels of DR2 have little to do with their choices

C. the high levels of DR2 can make animals avoid risks

D. the risky choice is a less rewarding option

3.The underlined words in Paragraph 7 most likely mean the animals that are ________.

A. willing to take big risks

B. reluctant to take risks

C. fond of gambling strategy

D. afraid of receiving stimulation

4.What can be inferred from what Professor Karl Deisseroth said?

A. Humans and rats differ in their preference for risk-taking.

B. Too much risk-taking can do more harm than good.

C. Risk-taking can be used to treat people with impulse control problems.

D. Risk-taking is a means of survival and brings higher returns to humans.

Wisconsin has long been home to incredibly successful research and innovation thanks to our famous academic research institutions and some of the brightest scientific minds. From discovering how Vitamin D can best be absorbed, to unlocking the potential of stem cells, Wisconsin has pioneered remarkable breakthroughs in science that have improved health, saved lives and created jobs. These scientific breakthroughs have not only led to life-saving medical technologies but also have fostered (培育) a strong power in Wisconsin economy.

Across America, groundbreaking research supported by the National Institutes of Health (NIH) alone adds millions of dollars to our economy every year. In fact, NIH funding generated an estimated $58 billion in economic output nationwide in 2014. NIH funding spurs economic growth by supporting jobs in research and by generating biomedical innovations that are turned into new products. NIH-supported innovations also influence improvements in health that can bolster the economy, improve productivity, and reduce illness and disability at home and across the globe. But, budget cuts and inadequate funding for NIH in the past decade have put both medical innovation and our next generation of researchers at risk.

Today, too many of our talented young scientists are deciding to do something else, or are leaving the country to pursue their research. Simply put, scientific and medical innovation depends on our ability to foster, support and invest in these new researchers.

That is why I have worked across party lines with Senator Susan Collins of Maine and introduced the Next Generation (NextGen) Researchers Act. Our act builds opportunities for new researchers, helps address the debt burden that young scientists face today, and invests in the future of research, science, and innovation. This commonsense proposal would create the “Next Generation Researchers Initiative” within the NIH Office of the Director to coordinate (协调) all current and new NIH policies. The legislation (立法) also directs the NIH to consider recommendations from a National Academy of Sciences (NAS) comprehensive study and report on fostering the next generation of researchers.

Finally, we must demonstrate a commitment to our future scientists who, like so many of their peers pursuing other fields, are struggling with crushing student loan debt. Our plan would also increase the amount of loans that can be forgiven through the NIH’s loan repayment programs to better account for the current debt load of new scientists. Higher education should be a path to prosperity, not suffocating debt, and this provision not only helps make higher education more affordable, but can help give new researchers a fair shot at pursuing their dreams.

The Next Gen Researchers Act will help to empower our next generation of researchers from Maine to Wisconsin, and across our country, with the resources they need to continue to lead the world in groundbreaking biomedical research and development. I’m proud to have earned the support of the University of Wisconsin-Madison, the Medical College of Wisconsin, and many others, for my bipartisan work supporting Wisconsin’s leadership in science, research and innovation.

At a time when America’s young researchers are facing the worst funding in decades, our best and brightest minds deserve to know that our country stands with them and is committed to building a stronger future.

1.Why does the author talk about Wisconsin in the first paragraph?

A. To explain why some brightest scientific minds are rewarded for making contributions.

B. To indicate Wisconsin has made great breakthroughs without the support of NIH.

C. To illustrate that Wisconsin takes a lead in scientific breakthroughs and deserves his support.

D. To distinguish Wisconsin’s achievements in science and innovation from the other states’.

2.The following are all the ways of NIH promoting America’s economic growth EXCEPT ________.

A. supporting research jobs

B. encouraging medical innovations

C. improving health and productivity

D. handling budget cuts

3.According to the passage, the introduction of the Next Gen Researchers Act is intended to ________.

A. sing high praise for the work coordinating all current and new NIH policies

B. support and invest in young researchers involved in medical innovation

C. forgive NIH’s current loan debt to make higher education more affordable

D. consider suggestions from NAS’ comprehensive study and report

4.What could be the best title of the passage?

A. It’s Time to Strengthen Our Commitment to the Next Generation of Researchers

B. It’s Time to Strengthen Our Biomedical Research and Development

C. It’s Time to Strengthen Our Next Generation Researchers Act of NIH Office

D. It’s Time to Strengthen Our Loan Repayment Programs of NIH