1 . Here is a story about a young boy in New York. He once went to one of Dr. Jane Goodall’s talks and learned about the _______ expressions of chimpanzees.

When he saw a picture of a chimpanzee on a box of _______and it looked like the chimpanzee was grinning (咧嘴笑), the boy _______ from what he’d learned at Dr. Goodall’s talk that the chimpanzee’s look was actually one of _______.

The boy _______ to the cookie-maker asking to take the chimpanzee’s picture off the box. _______ receiving a letter back from the company, he saw the picture of the chimpanzee _______from the box within just a few months.

“I took _______,” the boy now says. “And the company changed.”   _______ it happened that the picture changed, the boy and his family   ________it was his doing.

As the story shows, young students have much more ________ to accomplish change than what   ________may believe. Moreover, students often achieve much more than they ever   ________ they will.

The story also ________us that small actions can have a big impact. We often tend to think about   ________ events like Clean and Green Week. Instead, a lot of small changes can make a(an)   ________. If hundreds or thousands of students   ________ their families to turn off the tap to save water, move the air-conditioning temperature up a degree or two, drive less and make other environmentally friendly changes, the ________ family may change its behaviors.       

With these small yet highly   ________ changes, students have an effect beyond just their own actions. Students can   ________ by realizing that their own actions have more power than they may expect, and environmentalists can benefit as well by taking the time to focus on even the youngest students.

2 . After a two-hour flight from Shanghai and an hour’s drive, I reached my destination: Jielingkou Village in Qinhuangdao City of Hebei Province, China. The tiny and ________ village is home to Shanhai Pass, where the Great Wall finally dives into the sea. During the Ming Dynasty (1368~1644), Jielingkou Village was considered an extremely important part of the Great Wall. But it slowly fell out of ________ and into disrepair—in modern China.

In 2018, an anti-poverty project began in the village, with the ________ of not only fixing the place up, but also ________ the living standards of the 200 people still living there. One of the ________ was to change all of the old homes into modern guesthouses. “This will allow city folks to enjoy the Great Wall in comfort,” said Ge, who was ________ the project.

But gaining the locals’ ________ took a lot of effort at the beginning. “Just two years ago, they weren’t ________ about the project at all,” Ge told me. “Seeing that they had to ________ water from a faraway well every day, we decided to build a water system that would send water to their homes. It’s one of the first, ________ we have made. It really ________ . Now some of those who were strongly against our project are now our greatest ________ .”

Ge said he hopes that as conditions are ________ becoming better in Jielingkou, some of the younger members of the village who left to seek opportunity in the cities will come back. “Already two university graduates who grew up in the village have returned to ________ the guesthouses. I hope more will be ________ by the potentials here soon.”

3 . Cheating in sport is as old as sport itself. The athletes of ancient Greece used potions to strengthen themselves before a contest, and their modern counterparts have everything from anabolic steroids (类固醇) to growth hormones with which to_________their bodies. These days, however, such stimulants are_________, and those athletes must therefore face the challenges of anti-doping (反兴奋剂) agencies.

The agencies have had remarkable success. Testing for anabolic steroids was introduced in the 1970s, and the incidence of cheating seems to have_________dramatically as a result. The tests, however, are not entirely_________. And a study just published in the Journal of Clinical Endocrinology & Metabolism by Jenny Jakobsson Schulze and her colleagues at the Karolinska Institute in Sweden suggests that an individual’s genetic make-up could_________the tests in two different ways. One genotype, may allow athletes who use anabolic steroids to escape detection altogether. Another may actually be convicting (给……定罪) the innocent.

The test employed for testosterone (睾酮素) abuse usually relies on measuring the_________of two chemicals found in the urine (尿液): TG. and EG.. Any ratio above four of the former to the latter is considered_________and leads to more tests. However, the production of TG is controlled by a gene called UGT2B17. This gene comes in two varieties, one of which has a part missing and therefore does not work properly. A person may thus have none, one or two working copies of UGT2B17, since he inherits one copy from each parent. Dr. Schulze_________that different numbers of working copies would produce different test results. She therefore gave healthy male volunteers whose genes had been examined a single 360mg shot of testosterone — the standard dose for legal medical use — and checked their urine to see whether the shot could be_________.

The result was remarkable. Nearly half of the men who carried no functional copies of UGT2B17 would have gone undetected in the standard doping test.____________, 14% of those with two functional copies of the gene were over the detection threshold (门槛) before they had even received an injection. The researchers estimate this would give a ____________rate of 9% in a random population of young men.

Dr. Schulze also says there is substantial____________variation in UGT2B17 genotypes. Two-thirds of Asians have no functional copies of the gene which means they have a naturally____________ratio of TG to EG, compared with under a tenth of Caucasians (白种人) — something the anti-doping bodies may wish to take into account.

In the meantime, Dr. Schulz’s study does seem to offer innocents a way of____________themselves. Athletes who will travel to Paris for the Olympic games may be wise to travel armed not only with courage and the “spirit of Olympianism”, but also with a copy of their____________, just in case.

4 . There have been countless books and television series on living with teenagers, yet parents don’t seem to have _________ how to get their children to pick up their clothes from the bedroom floor, or even clean their room occasionally. It might be difficult to accept, but a new approach to dealing with rude or difficult teenagers is for parents to look at their own _________.

“The key to getting teenagers to respect you is to respect them first,” says Penny Palmano, who has written a best-selling book on teenagers. “You can’t _________ to treat them the same way that you have been treating them for the previous 12 years: they have opinions that count. Imagine if you’d spent two hours getting ready to go out for the evening and someone said, ‘You’ve not going out looking like that, are you?’ You’d be very _________. You’d never say that to an adult, because it shows a total _________ of respect.”

Palmano, who has a daughter aged 19, has even allowed the girl to hold several teenage parties at her home. “I’ve found that if you have brought your kids up to do the right thing, and then _________ them to do it, usually they’ll behave well,” she says. “I make them sandwiches and leave them alone. But I make it clear that they have to clear up any mess. I’ve never had a(n) _________; in fact, the kitchen was sometimes cleaner than I’d left it.”

She agrees that teenagers can be annoying: enjoying a world that is free of responsibility, yet _________ for independence. She doesn’t think, however, that they are _________ to annoy you. Until recently, scientists assumed that the brain finished growing at about the age of 13 and that teenage problems were a result of rising hormones and a desire for independence. But it turns out that the region of the brain that controls judgement and emotions is not fully __________ until the early twenties.

“This would explain why many teenagers can’t make good decisions, control their emotions, priorities or concentrate on several different things at the same time. __________, they may find it difficult to make the right decision between watching television, ringing a friend, or finishing their homework. It means that they do not __________ do the wrong thing just to annoy their parents,” says Palmano.

The key to __________ for all, Palmano believes, is calm negotiation and compromise (妥协). If you want your teenagers to be home by 11 pm, explain why, but listen to their arguments as well. If it’s Saturday, you might __________ agreeing to midnight (rather than 1 am, which is what they had in mind). If they are up to 20 minutes late, don’t react angrily. __________, ask if they’ve had a problem with public transport and let it pass; they’ve almost managed what you asked.

5 . At the start of every vacation, many parents spend their time wondering: What will the children do? When I was a child in the 1950s, the answer was easy. The children would play. We played feely with other children, in our own chosen ways, away from adults. When we got bored, we found ways to overcome it. We took up _________, took risks, sometimes hurt ourselves, got into trouble, and _________ how to get out of it.

During such play, we acquired knowledge and skills that couldn’t be taught to us in school. We learned how to take _________, make our own decisions, solve our own problems, get along with peers as equals, experience fear and then find ways to manage it, experience anger and then find ways to overcome it. We also discovered our interests, _________ them, and became skilled at them—interests that for many of us later became _________.

Over the past 60 years, however, we’ve seen a huge _________ in children’s freedom and opportunity to play on their own. Over this same period, we’ve also seen a dramatic increase in the rates of _________ and anxiety disorders among young people- five to eight times what they were in the 1950s.

Our children love to play in moderately _________ ways. Through such play, they acquire the physical, social and emotional capacities required for healthy development. They learn to get along with one another by playing socially, and they learn to deal with emergencies by playing in ways that involve risk.

Why is such play so _________? It can cause injury, so why hasn’t natural selection __________ the inner desire for it? We have some clues from laboratory experiments.

Researchers have found that when young rats or monkeys are deprived (剥夺) of play during critical periods in their development, the animals grow up as emotional cripples (跛者). They are __________ disabled when placed in new, slightly frightening environments to which normally raised animals would __________. They repeated between incapacitating fear and inappropriate aggression when placed with __________ peers. So it is no surprise to me that play-deprived human children grow up insufficient in the social and emotional skills required to deal well with life’s inevitable stressors (应激源). They may also grow up __________ the abilities to think creatively, take initiative, and assume responsibility.

We have deprived children of free, risky play, probably for their own good. In the process we have denied them the opportunity to learn how to be __________ by playing in risky ways.

Our children need more freedom, not more adult control.

6 . The future has arrived at a dairy farm(乳牛场). It is _______ time at Woodbourne Creamery in Mt. Airy, Maryland. The cows are standing in line for a _______ at the robot.

The farm _______ John Fendrick. He watches the _______ of the animals by looking at a computer screen. That is all he has to do. The robot does all the work. It uses a laser(激光) to find each teat —— the place on the cow where the milk comes out. The robot then cleans the teat and _______ a milking tube to it.

When the velocity of milk coming out of the cow slows, the machine knows to _______, and sends the cow on its way.

Milking robots are becoming _______ among dairy farmers in the United States, Europe and Australia. John Fendrick says the robots have _______ life on a dairy farm. “You are given your _______back.”

Most dairy farmers must milk their cows two times a day, early in the morning and late at night. But Mr. Fendrick’s cows do not follow such a ________. They stay in the field ________ they want to be milked by the robot.

The cow milking robot is not low-cost technology. Mr Fendrick paid more than $150,000 for it.________ he notes, paying someone to milk the cows is also ________. “However, above all, I don’t have to be the person who’s always ________ to milk. Our cows are able to ________ without us ——to us, it’s well worth the money.”

7 . Trying to make a big decision while you’re also preparing for a scary presentation? You might want to ______ doing that. Most people prefer to have sufficient time to analyze a situation and consider the ______. Feeling stressed changes how people ______ risk and reward. A new article published in Current Directions in Psychological Science reviews how, under stress, people pay more attention to the ______ of a possible outcome. Pressure can result in ______ attention and the use of unconscious reasoning. It can force a decision-maker to sort the relevant factors from the irrelevant, and can ______ clear thinking with specific priorities. 

It’s a bit ______ that stress makes people focus on the way things could go right, says Mara Mather of the University of Southern California. “This is sort of not what people would think,” Mather says, “Stress is usually associated with disagreeable experiences, so you’d think that maybe I’m going to be more focused on the ______ outcomes.” But researchers have found that when people are under stress — by being told to hold their hand in ice water for a few minutes, for example, or give a speech — they start paying more attention to positive information and ______ negative information. “Stress seems to worsen their learning from negative feedback,” Mather says. This means when people under stress are making a difficult decision, they may pay more attention to the upsides of the alternatives they’re considering and less to the downsides. So someone who’s deciding whether to take a new job and is feeling stressed by the ______ might weigh the increase in salary more heavily than the worse commute (通勤)。

The increased focus on the positive also helps explain why stress plays a role in ______, and people under stress have a harder time controlling their urges. “The compulsion to get the reward comes stronger and they’re less able to ______ it,” Mather says. So a person who’s under stress might think only about the good feelings they’ll get from negative things like a drug, while the ______ shrink to the distance.

Stress also ______ the differences in how men and women think about risk. When men are under stress, they become even more ______ to take risks; when women are stressed, they get more conservative. Mather links this to another research that finds, at difficult times, men tend to face the situation, while women are likely to be more conservative.

8 . Imagine, it's Saturday at a busy shopping centre. People are doing all the things you'd _________ expect—chatting on phones, looking in shop windows and so on. Then suddenly, the _________ in front of you stop moving. They're completely _________, frozen in the middle of whatever they were doing. You look around you. There are _________ of these people—perhaps a hundred or so. Other shoppers look just as _________ as you are. Several minutes go by and the frozen shoppers _________ in exactly the same positions. Then as suddenly as they _________, they begin moving again, as if nothing had happened. You've _________ experienced a flash mob!

The definition of a flash mob is “a group of people who meet suddenly in a _________ place, perform an unusual act for a brief __________, then quickly leave”. An American, Bill Wasik,__________ the idea. One afternoon, he emailed 60 friends,__________ them to meet at a small local shop at exactly 7:24 pm. They shouldn't __________ anything to the assistants or each other. They just had to browse (随意观看) for __________ seven minutes and then leave. It would have been the __________ of world's first flash mob. However, someone had warned the police and when Bill and his friends arrived, they were __________.

Bill wasn't __________ by this failure and started planning the next event. Over the next three months, he __________ seven successful flash mobs in shops, hotels, parks and stations all around New York. Before long, stories and videos of these __________ appeared online. Wasik's idea led to creative types of flash mobs everywhere. The flash mob had become part of modern urban culture and the phrase was even __________ to the Oxford English Dictionary.

9 . Is loyalty in the workplace dead?

Just recently, Lynda Gratton, a workplace expert, proclaimed that it was. In The Financial Times, she said that it had been “killed off through _________ contracts, outsourcing, automation and multiple careers.”

It’s sad if this good virtue is now out of place in the business world. But the situation may be more _________. Depending on how you _________ it, loyalty may not be dead, but is just playing out differently.

Fifty years ago, an employee could stay at the same company for decades, said Tammy Erickson, an author and work-force consultant. Many were _________ longtime employment along with health care and a pension.

Now many companies cannot or will not hold up their end of the bargain, so why should the employees hold up theirs? Given the opportunity, they’ll take their skills and their portable retirement accounts elsewhere. These days, Ms. Gratton writes, _________ is more important than loyalty: “Loyalty is about the future - trust is about the present.”

Ms. Erickson says that the quid pro quo (交换物，报酬) of modern employment is more likely to be: As long as I work for you, I promise to have the relevant skills and _________ fully in my work; in return you’ll pay me _________, but I don’t expect you to care for me when I’m 110.

For some baby boomers, this _________ has been hard to accept. Many started their careers _________ that they would be rewarded based on tenure (任职).

A longtime employee who is also productive and motivated is of enormous value, said Cathy Benko, chief talent officer at Deloitte. On the other hand, she said, “You can be with a company a long time and not be highly committed.”

Ms. Benko has seen her company shift its ____________ to employees’ level of engagement - or “the level at which people are motivated to deliver their best work” - rather than length of tenure.

Then there are the effects of the recent recession. Many people - if they haven’t been ____________- have stayed in jobs because they feel they have no choice. Employers may need to prepare for disruptions and turnover when the job market improves.

If the pendulum(摇摆不定的事态或局面) shifts, how will businesses persuade their best employees to stay? ____________ may do the trick, but not always. Especially with younger people, “you’re not going to buy extra loyalty with extra money,” Ms. Erickson said. ____________, employers need to make jobs more challenging and give workers more creative space, she said.

Loyalty may not be what it once was, but most companies will still be better off with at least a core of people who stay with them across decades.

If loyalty is seen as a ____________ to keep workers of all ages fulfilled, productive and involved, it can continue to be cultivated in the workplace - to the ____________ of both employer and employee.

10 . From Oxford’s quads to Harvard Yard and many a steel and glass palace of higher education in between, exams are given way to holidays. As students consider life after graduation, universities are _______ questions about their own future. The higher education model of lecturing, cramming and examination has barely _______ for centuries. Now, three disruptive waves are threatening to shake established ways of teaching and learning.

On one front, a funding _______ has created a shortage of fund that the universities brightest brains are struggling to solve. Institutions’ costs are rising, _______ pricey investments in technology, teachers’ salaries and increasing administrative costs. That comes as governments conclude that they can no longer afford to subsidize universities as _______ as they used to. American colleges, in particular, are under pressure: some analysts predict mass bankruptcies within two decades.

At the same time, a(n) _______ revolution is challenging higher education’s business model. A(n) _______ in online learning, much of it free, means that the knowledge once a lucky few had access to has been released to anyone with a smartphone or laptop. These _______ and technological disruptions coincide with a third great change: whereas universities used to educate only a tiny elite, they are now _______ training and retraining workers throughout their careers. How will they ________ this storm—and what will emerge in their place if they don’t?

The universities least likely to lose out to online competitors are elite institutions with established reputations and low student-to-tutor ratios. That is ________ news for the Ivy League, which offer networking opportunities to students alongside a degree. Those colleges might profit from expanding the ratio of online learning to classroom teaching, lowering their costs while still offering the prize of a college education conducted partly on campus.

The most vulnerable, according to Jim Lerman of Kean University in New Jersey, are the “middle-tier institutions, which produce America's teachers, middle managers and administrators.” They could be ________ in greater part by online courses, he suggests. So might weaker community colleges, although those which cultivate connections to local employers might yet prove resilient (有弹力的).

Since the first wave of massive online courses launched in 2012, an opposition has focused on their ________ and commercial uncertainties. Yet if critics think they are immune to the march of the MOOC, they are almost certainly wrong. Whereas online courses can quickly________ their content and delivery mechanisms, universities are up against serious cost and efficiency problems, with little changes of taking more from the public purse.

Without the personal touch, higher education could become “an icebound, petrified (石化的) cast-iron university.” That is what the new wave of high-tech courses should not become. But as a(n) ________ to an overstretched, expensive model of higher education, they are more likely to prosper than fade.