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New research suggests that pandas may be at risk of dying out because they are too comfortable. Experts say too much happiness can strip the bears from searching for new mates. Environmentalists have long believed that building roads in forests near the bears may threaten their survival by "reducing or fragmenting their natural habitats". The Times reported. But the new research suggests that a "modest degree of discomfort and fragmentation" may actually help preserve panda populations. The research was conducted by scientists from Michigan State University. It concluded that pandas fail to wander off to search of new mates if they find their habitat too comfortable, resulting in a lack of vital genetic diversity. For their study—published in a paper in the journal Conservation Biology—the team looked at genetic diversity and spread among a Chinese panda population. The ideal level of perfectly isolate habitat was found to be only 80% of its area, with the remainder either in bush or was affected by human activity. The experts concluded that pandas should ideally "be happy enough to thrive, not so content that they don't want to move around and find new mates". Their conclusion about what The Guardian described as this "sweet spot" is in line with the so-called Goldilocks principle: that there can be just the right amount of something. The concept has been applied to a wide range of disciplines, from developmental psychology to economics and engineering. Claudia Sillers, a professor of conservation biology at Oxford University, told the newspaper that the new findings could have implications beyond panda conservation. "More large animals that are most like us in increasingly fragmented landscapes," said Sillers, who was not involved in the research. "It may well be that the many nature of their relationship with human efforts induces them animals to scatter or travel further, and might result in greater genetic connectivity and enhanced population persistence." The most recent count of pandas found that there were more than 1,800 left in the wild, putting them on the list of vulnerable, but not endangered, species.【缺少答案，请补充】

What do we learn from new research about pandas?

What can we conclude from the new research by scientists at Michigan State University?

What is the experts' conclusion regarding pandas?

What can we infer from the passage about the Goldilocks principle?

What can the new findings do according to Professor Sillers?

With those born with natural talents, it feels as if they must without really trying. But what about those of us who don't have a natural talent? We've been told all our lives that if you work hard, you too can succeed. But with the release of Angela Duckworth's Grit, we are given a new term to success. "As much as talent counts, effort counts twice," says Duckworth in Grit. She introduces a new concept that talent may be overrated, and if you want real success, what you need is grit, the perfect combination of passion and persistence. Even if you have natural talent, it's nothing without grit. Duckworth says grit is the difference between success and failure. A person who has grit is more likely to succeed than a person who does not. We think about starting success—whether it's landing that job or learning that new skill—our thoughts are immediately business to all the things we must first learn. If you want that new job, you have to learn the job skills, then the interview skills, then the dress part—and you must be perfect at all of them. Grit is different because it tells us that perfection isn't the goal. Grit fills the unreasonable expectations off our shoulders. Grit tells us that the door is open wider than we first thought possible. Grit allows us to redefine our goals. Think about it: what's something you've always wanted to do, but gave up because you "don't have the skills for it"? What's something you love but aren't good at? The real workings of grit are to have sustainable passion and continue to try. Effort comes more than your natural ability. Even if you haven't mastered a skill, grit tells you that you can still succeed if you can transform your passion into action. In a way, Duckworth is giving new hope to people who have that the doors on their dreams. She is saying it is possible that you can accomplish anything. If at first you fail, fans try one more time with grit.【缺少答案，请补充】

What does the passage say about people born with natural talents?

What does Duckworth say about talent?

What does the passage say about people thinking of attaining success?

How does the author think grit can be helpful to us?

What message does Duckworth try to convey in her book Grit?

We all take a little extra effort to look nice for special occasions. But none of us have conflicting feelings about dressing up and feel guilty about taking the time to focus on clothes. Science now suggests that right dress may give ourselves the extra edge in our professional and personal lives. We hear sayings like "dress for the job you want, not the job you have". Most people don't really believe in them, but research into the impact of clothes on behavior now suggests that dress may actually be a point of truth in these sayings. Science says that the clothes we wear affect our behavior, our mood and even the way we interact with others because of the symbolic meaning that we assign to different types of clothing. We consider some clothes to be powerful, some to be flat, and so on. We even evaluate people whom we have just met based on their clothes. We also evaluate ourselves based on what we are wearing because of the way they make us feel. This means that the experience of wearing something affects our attitudes and our choice of behavior. There's a reason tailored jackets are associated with being "dressed for success". It means that wearing formal office wear puts us in the right frame of mind to conduct business. Wearing power clothing makes us feel more confident and even increases hormones needed for displaying dominance. This in turn helps us become better negotiators and attract thinkers. While a good suit works wonders for our performance in the boardroom, wearing formal wear isn't a good idea when we want to socialize. Studies have found that people tend to be less open and less able to relax when they wear formal clothes. On the other hand, a casual dress helps us become more friendly and creative. These findings support the idea of wearing business casual on a Friday, since colleagues are more likely to take out time to socialize on the last work day of the week. I mean, who wants to hang out with people in their suits?【缺少答案，请补充】

What does science suggest the right dress may do?

Why does science say the clothes we wear may affect our interaction with others?

How do the clothes we wear away our evaluation of ourselves?

Why does the author say informal jackets are associated with being "dressed for success"?

What are people advised to do when they want to socialize?

With the rise of pop music, jazz, and electronic music, both opera and classical music started to fade away from the public eye. Some people are beginning to wonder whether opera and classical music are still relevant in the modern world of music. Granted, you will not typically see today's teenagers heading their ears to Bach anytime soon, but there are some major indicators that both opera and classical music are still quite alive. The most major indicator of classical music's importance in society today is the fact that much of the popular music that is currently being produced uses similar beats, harmonies, and melodies (歌剧). As those who were used to some of classical music's best works. Even so, it can be difficult for those who do not study music theory to see this as an indicator, since it is subtle and just shows the impact (impact) of (20th-21st) centuries have had on society's taste in music. A better example for the relevance of opera and classical music can be seen in the invention of the rock opera. Opera, in its simplest definition, is telling a story using music as its form. The art of telling a story using music has not faded in the least bit. In fact, sometimes lyrical tendencies are used for major parts of the opera itself. Some of the world's greatest hits have been parts of rock operas. Fans of classical music can also tell you that there are five types of music that are more expressive. So, it should come as no surprise to anyone that classical music pieces are still used in background music in modern movies. Symphonic orchestra compositions have also been created solely for the purpose of being included in major motion pictures. These are often very well received amongst mainstream music fans. Classical music and opera are the very foundation of what our modern music is based upon. Considering the huge impact they have had on our current society, it is without doubt that we can expect them to continue to remain important for centuries to come.【缺少答案，请补充】

What does the author think of classical music and opera in today's world?