As a child, I was always told to “eat my greens”. These were the unappealing vegetables that sat on the edge of my plate. Peas, and green beans, all looked and tasted 1. Let's face it, when there were so many other delicious treats to2 why eat boring vegetables?

    Since then my taste buds have3and I'm also fully aware of the health benefits of eating fresh vegetables. But we still need 4 of the amazing goodness these green super foods give us. In the UK, a campaign has been 5 for several years to encourage us to eat our “5 A Day”—five portions of fruit and vegetables. That's6 evidence has shown there are significant health 7 to getting at least five 80g portions of a variety of fruit and vegetables every day.

    But I struggle trying to fit these five portions into my daily 8 partly because I have a sweet 9 and vegetables are, well, tasteless. Researchers have been 10 how to make eating vegetables more 11. They analysed the psychology behind our food 12 and found that most of us are 13 by taste. Brad Turnwald from Stanford University says that “studies show that people 14 to think of healthier options as less tasty for some reason.”

    In Europe, a project called VeggieEAT has also been trying to find ways to get people to 15 more vegetables. Project leader, Professor Heather Hartwell believes in 16 encouraging people into eating the right things. One idea has been to put a 17 of a tasty looking fruit on a supermarket trolley as a 18 about buying something from the fruit store. She says, “Choice is a really 19 thing. But making vegetables look attractive will increase their sales.”

    Certainly, eating “twisted citrus-glazed carrots” does sound tempting, even if it just 20like a carrot, but if it makes us eat more vegetables then that can only be a good thing for our health.

    Why did the orangutan（猩猩）cross the road? That's not the start of a joke, but a question being asked by scientists studying these brilliant apes.

    Brent Loken, who runs a group called Integrated Conservation, used camera traps to research into orangutans. That group protects 1  animals in Borneo, the largest island in Asia. Camera traps work by taking a quick photo, when something moves in front of them. In Borneo, scientists use the photos to 2 what the rare orangutans do when people aren't 3?

    Scientists have been studying orangutans in the rainforests for decades. And their data had suggested that the animals almost always traveled through the 4. They were 5seen walking on the forest floor. Yet when Loken looked at the photos from his team's camera traps, he got surprised that the apes were walking on the ground, 6 using logging roads（运材道路）and paths built by people.

    Were these animals simply 7to walk on the ground because logging had left too many 8? Or did they 9 down logging roads as convenient shortcut? “More10 is needed,”

    People are removing trees for logging, plantations and the building of the cities. The new findings suggest orangutans might be able to learn to 11with some of these changes in their 12. It doesn't mean the animals can survive 13 forests. But it does suggest there might be ways to log forests in a way that won't greatly14 these apes.

    Stephanie Spehar, primatologist at the University of Wisconsin, Oshkosh, agrees. “The new study doesn't mean they're fine in areas with no trees,” she says. “Orangutans clearly need the forest to 15.

    If you do not use your arms or your legs for some time, they become weak. When you start using them again, they will slowly become strong again. 1 knows this, and nobody would even2 this fact.

    Yet there are many people who do not 3 to know that memory works in the same way. When someone says that 4 has a good memory, he 5means that he keeps his memory in practice 6 exercising it very 7. When someone says that his memory is 8, he means that he does not give it enough 9 to become strong. The same is true of 10 people, one of11exercises his arms and legs by playing ball, while the other12in a chair or a car all day. If a friend of yours says that his arms are weak, we know that it is his own13. But if he tells us that he has a poor memory,14of us think that he is just 15, and few of us realize that it is just as it was his arms or legs that were weak. Not all of us can become very strong in body or very clever in mind, 16all of us can improve our strength and our memory in the 17 ways that work.

    Have you ever 18 that people who cannot read or write usually have 19memories than those who can? Why is this? Of course, because they cannot write down something in a little notebook or something else. They have to remember names, places, songs and stories; so their memory is always being exercised.

    In a word, if you want to have a good memory, practice20things.

    Do you think you have what it takes to be a successful scientist? A successful scientist is generally a good observer. He makes full 1 of the facts he observes. He doesn't accept ideas which are not 2 on obvious facts, and therefore3 to accept authority as the only reason for truth. He always checks ideas 4 and makes experiments to prove them.

    The rise of 5 science may perhaps be considered to 6 as far back as the 7 of Roger Bacon, the wonderful philosopher of Oxford, who lived 8 the years 1214 and 1292. He was probably the first in the middle ages to suggest that we must learn science 9 observing and experimenting on the things around us, and he himself 10 many important truths.

    Galileo (1564­1642), however, who lived more than 300 years later, was the greatest of several great men in Italy, France, Germany, and England, 11 began to show how many important 12 could be discovered by observation by degrees. Before Galileo, learned men believed that large bodies fell more 13 towards the earth than small ones, 14 Aristotle said so. But Galileo, going to the 15 of the Leaning Tower of Pisa, let fall two 16 stones and proved Aristotle was wrong. It was Galileo's 17 of going direct to nature, and proving our 18 and theories by experiment, that has led to all the discoveries of modern science.

    What 19 those people good scientists? From the example of Galileo, we know it clearly that successful scientists are those whose observations have 20 better results.

    Marmoset monkeys exist on a branch of the evolutionary tree that is distinct from the one that led to mans. But they constantly astonish researchers with 1 behavior that seems pretty highly evolved. Their social organization and 2 practices could have been the model for the phrase “It takes a village.” A dominant male and female breed, and their babies are carefully looked after by extended family members who then aren't free to breed themselves.

    A new study further 3 the marmoset's reputation for admirable community values. Researchers report that these caregivers share their food more generously with little ones 4 than when they're surrounded by the watchful eyes of other community members. In complex societies where individuals band together for 5 protection, researchers have come up with a few widely accepted explanations for selfless behavior. But specific acts, like sharing a delicious cricket(蟋蟀) with a begging baby marmoset, seem to need more 6 explanation

    One possibility is that an individual practices 7 as a means of enhancing his status among peers. By 8 that he is so well gifted with material goods that he can give some away, this do-gooder enhances his power within the group. That, in turn, may 9 prospective mates. The other explanation for charitable behavior 10 that kindnesses extended to others are simply the fees of group membership, which offers some future promise of a chance to mate. Failure to share would result in exclusion from the group and a loss of 11 partners. Scientists call this the “pay to stay” model. Importantly, for both of these models to work, acts of kindness must have a(n) 12. That suggests you would see more sharing in group settings; away from judging eyes, a caregiver might be more likely to keep food for himself or herself. And yet, in 2,581 tests conducted with 31 adult and 14 baby marmosets, the 13 appeared to be true

    Anthropologists (人类学家) from the University of Zurich carefully documented how often, in groups and in conditions that found caregiver and baby separated from the crowd, an adult would share his or her cricket. When alone with a baby begging for a taste, adult marmosets shared their cricket 85% of the time. When in a group, caregivers offered up their cricket 67% of the time.” Our results show that helping in common marmosets is not driven by reputation management or 14 avoidance, “the study authors reported Rather, it is driven by a deep-down motivation to help that is more 15 expressed when individuals are alone with young.”

    Wildlife has been greatly threatened in the modem age. There are species (物种) that are 1 every day. The white-naped crane is a typical example. So scientists are trying their best to 2 the species from going out of existence.

    Chris and Tim work at a zoo, helping endangered cranes with their 3. Emma, a female crane, has been in their 4 since she arrived in 2004.

    Born at an international crane foundation, Emma was 5 by human caretakers. This led to an unexpected 6, though she had a wonderful time there. Emma had 7 taken herself as a crane and become deeply attached to humans. She 8 to live with male cranes, and even had a 9 for killing some of them, which made it 10 for her to become a mother.

    11, the two zookeepers didn't want to see the extinction (灭绝) of this precious species. With their patience and efforts, they successfully developed a 12 of artificial breeding (人工繁殖) and natural reproduction. This 13 Emma to give birth to five baby cranes.

    The two keepers are proud of their productive work. But before they can be 14, more efforts must be made, because the population of the crane in the wild is on the 15, and many other species appear headed toward extinction. 16, not everyone has realized that wildlife has thoughts, feelings, and most importantly, equal rights to survive.

    How can we 17 the ever-widening gap that separates us from other animals? Chris and Tim offered us the 18: human beings took it for granted that their 19 held all the solutions, but maybe their hearts can be a better 20.