Children who are brought up by two parents grow up to be cleverer than those raised by just one person, new research suggests. Being with both parents in the earliest years of life leads to a child developing more brain cells, the scientists believe. Being brought up by both parents causes boys to have better memory and learning functions. By contrast, it causes girls to develop improved co-ordination and sociability. It is believed that babies with two parents tend to get more attention and more stability , and that they are less likely to suffer emotional distress in the first years of life. This leads to greater brain cell production ------ for boys it is grey matter brain cells that develop and for girls is white matter brain cells. The researchers from Canada studied mice and experimented by creating one-parent and two-parent family groups. They then measured the offspring's brain cell development from birth to adulthood. Adult mice with the highest number of brain cells turned out to be those who had been brought up by two parents rather than one. As babies they had received more attention and more nursing as both parents took turns to lick and tend to their youngsters, said Dr Samuel Weiss. As a result, the babies with two parents are less likely to suffer early life hurt which can have a massive impact on how their brains develop in later life, the research shows. However, what did surprise the researchers is that female babies who grew up with both parents turned out to be good single mothers, as if good parenting was passed on. The researchers said," In the mouse model, parenting and the environment directly _ adult brain cell production. It is possible that similar effects could be seen in other mammals, such as humans." What does the passage mainly tell us? A) Children brought up by two parents are cleverer. B) Children brought up by single parent are cleverer. C) Children grow up themselves are cleverer. D) Children grow up themselves are more self-confident.
A
People live in different parts of the world and lead different types of lives. Their lifestyles change across the different areas in the world. What is the difference between a city and country life? Let us see. We can see the modern facilities everywhere in the city like the Internet, telephone, television and satellite communication facilities are widely available in the city. A majority of families in the city are enjoying this technological advancement. The increasing population has led to an imbalance in human population. More and more industries have led to environmental problems like pollution. However, the rise in economic growth has resulted in a self-centered nature of society. While technological advancement has brought the world closer, human beings have gone far apart from each other. The country is not crowded with constructions all over. Houses are rather widely spaced with enough room for fields and gardens. The country is the only area fortunate enough to house the _ . People in the country live in close to nature. Apart from people, there is room for pets and animals that help keep a balance in nature. Due to a lesser number of people in the country, it is not overcrowded by people. These areas have least amounts of pollution. Pollution is less also because of very less number of industries in the country. The life may not be as enjoyable as that in the city, but the people there are generous, kind and friendly. The country is the one where humanity is still alive. Every coin has two sides to it. While we can't enjoy expensive things and technology in the country, it is rich in its relationship with 'nature'. The city life is modern in technology and career opportunities. However, the falling humanity and a bad environmental balance affect the bright future of city life. According to the passage, the main reason for pollution is _ . A) technology and economy B) population and industries C) population and humanity D) industries and balance.
B
Q: International teams have spent nearly half a year looking for evidence of the missing Malaysian Airlines plane, a search that includes the hunt for the aircraft's so-called black box, which holds flight data that would likely explain what caused MH370 to move away from its course. But many aviation experts wonder why, in our increasingly networked world, divers are searching the Indian Ocean for a metal box when technology already exists that would enable planes to stream black box data to the ground in the event of an emergency. Black boxes have been on planes since the late 1950s, and now every commercial aircraft has two: a flight data recorder and a voice recorder. (Although they are referred to as black boxes, they are typically orange in color, making them easier to spot in waters.) Black box recorders are mainly used to investigate the cause of in-flight accidents. While black boxes are built to survive a crash and long-term submersion in water, it can be a real challenge to find the device if a plane has gone down in the ocean. While each box contains a beacon , the unit only has enough battery power to transmit a signal for 30 days. After the crash of Air France Flight 447 in the Atlantic Ocean in June 2009, it took divers two years to find the black box. Pierre Jeanniot, a Canadian engineer who helped perfect black box technology about 40 years ago, feels that the device, in its current form, is " _ ". He started to question its effectiveness more than a decade ago, after seeing the broken pieces of the black boxes in the 2001 attacks on the World Trade towers in New York. Jeanniot is now on the advisory board of a Toronto-based firm that has built a live-streamed black box system. When a plane experiences an irregular event, the system can send streaming data off the aircraft to one of the satellites and then down to ground-based servers, where the message is interpreted and sent to the airline. It seems necessary that the loss of MH370 and other similar cases wake more people up to the fact that... What's airlines' attitude towards the live-streamed black box system? A) They approve of the system since it may save time, money and effort. B) They consider using the system as the bottom line of costs. C) They are reluctant to start the system because it still needs improving. D) They are unwilling to equip planes with the system as it cuts their profits.
A: D
(Question)
As a young woman who was always interested in style, I got lucky in interning with a fashion company in Tokyo, last summer. I worked as an assistant in the Business Planning Department, helping with marketing for the 2007 Spring/Summer collections. Fashion is a beautiful industry. But against my expectation, it also has lots of ordinary work. Every day, I would do sample testing, prepare the brochure for future launches, and meet with customers and visitors. Japanese companies had a traditional work style. We had a meeting every morning at 9 o'clock. Every Monday, all employees, including those in other parts ofprefix = st1 /Japan, would take part in a conference call. Every afternoon, after finishing work, each of us would say goodbye to every manager in the company, which took more than five minutes. All of this kept me fresh. And the strict work atmosphere caused me to work harder. At the end of last August, the company's 2007 Spring/Summer collection started with a big show and was very successful. Lots of customers showed an interest in our products, including a businessman from Hong Kong. He went to our company for more details on the products, but he couldn't speak Japanese and none of the staff spoke good English. Just when the situation seemed helpless, I offered to give it a try. I was a Japanese major, but I had also practiced my English often. My translation job was praised by both the customer and my boss. And the guest made a big purchase. The two-month internship taught me a lot about business. And the pay - 150,000 yen, or over 10,000 yuan a month- was enough to cover my daily living costs inTokyo. Moreover, the experience made me stand out. Every interviewer I've spoken with showed an interest and discussed my internship with me. And thanks to this experience, I've found a good job in one of the Big Four accounting firms and will start working this summer. Before she interned in the fashion company in Tokyo, the writer _ A) did not like the fashion. B) imagined it being beautiful and simply. C) didn't expect a fashion industry had lots of work as ordinary as normal. D) was nervous about it.
(Answer)
C