单选题The growth of part-time and flexible working pattern allows more women to take advantage of job opportunities.A. make use ofB. catch up withC. cast light onD. get rid of

单选题The kind of thing that happened last Saturday night is a regular Uoccurrence/U in the village.

单选题下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断：如果该句提的是正确信息，请选择A：如果该句提的是错误信息，请选择B：如果该句的信息文中没有提及，请选择C。 Plants and Mankind Botany, the study of plants, occupies a peculiar position in the history of human knowledge. We don't know what our Stone Age ancestors (祖先) knew about plants, but from what we can observe of preindustrial societies that still exist, a detailed learning of plants and their properties must be extremely ancient. They have always been enormously (巨大地) important to the welfare of people, not only for food, but also for clothing, weapons, tools, dyes, Medicines, shelter, and many other purposes. Tribes living today in the jungle of the Amazon (亚马逊河) recognize hundreds of plants and know many properties of each. To them botany has no name and is probably not even recognized as a special branch of "knowledge" at all. Unfortunately, the more industrialized we become the farther away we move from direct contact with plants. And the less distinct our knowledge of botany grows. Yet everyone comes unconsciously on an amazing amount of botanical knowledge, and few people will fail to recognize a rose, an apple, or an orchid (淡紫色的). When our Neolithic (新石器时代) ancestors, living in the Middle East about 10,000 years ago, discovered that certain grasses could be harvested and their seeds planted for richer yields the next season, the first great step in a new association of plants and humans was taken. Grains were discovered and from them flowed the marvel of agriculture: cultivated crops. From then on, humans would increasingly take their living from the controlled production of a few plants, rather than getting a little here and a little there from many varieties that grew wild and the accumulated knowledge of tens of thousands of years of experience and intimacy with plants in the wild would begin to fade away.

单选题His sole {{U}}motive{{/U}} was to make her happy.

单选题For some animals, locomotion is accomplished by changes in body shape.

单选题The conclusion can be deduced from the premises. A. argued B. derived C. permitted D. come

单选题His new girlfriend had Uomitted/U to tell him that she was married,

单选题Nitrogen is the most plentiful gas in the atmosphere .

单选题We should {{U}}contemplated{{/U}} the problem from all sides. A. deliberated B. thought C. described D, designed

单选题Losing Weight Girls as young as l0 years old are dieting and in danger of developing unhealthy attitudes about weight, body image and food, a group of Toronto researchers reported Tuesday. Their study of 2,279 girls aged 10 to 14 showed that while the vast majority had healthy weights, nearly a third felt they were overweight and were trying to lose pounds. Even at the tender age of 10, nearly 32 percent of girls felt " too fat" and 31 percent said they were trying to diet. McVey, a researcher at the Hospital for Sick Children in Toronto, and her colleagues analyzed data collected in a number of surveys of southern Ontario school girls between 1993 and 2003, reporting their findings in Tuesday"s issue of the Canadian Medical Association Journal. Nearly 80 percent of the girls had a healthy body weight and only 7.2 percent were considered overweight using standard weight-to-height ratios. Most researchers suggest the rate of overweight children in this country is several times higher than that figure. Nearly 30 percent of the girls reported they were currently trying to lose weight, though few admitted to dangerous behavior such as self-induced vomiting. Still, a test that measured attitudes towards eating showed 10.5 percent of survey participants were already at risk of developing an eating disorder. "We"re not talking about kids who"ve been prescribed a diet because they"re above average weight or overweight. We"re talking about children who are within a healthy weight range. And they have taken it upon themselves to diet to lose weight," McVey said, acknowledging she found the rates disturbing. She said striking a balance between healthy weights and healthy attitudes towards food and body image is a complex task, with no easy solutions.

单选题The Exploding Lakes of Cameroon What comes to mind when you think of a lake? You probably imagine a pretty scene with blue water, birds, and fish. For the people in the northwestern Cameroon, however, the image is very different. For them, lakes may mean terrible disasters. In 1984, poisonous gases exploded out of Lake Monoun and came down into the nearby villages, killing thirty-seven people. Two years later, Lake Nyos erupted. A cloud of gases rolled down the hills and into the valleys and killed 1,700 people. Lake Nyos and Lake Monoun are crater (火山口) lakes. They were formed when water collected in the craters of old volcanoes. The volcanoes under Lake Nyos and Lake Monoun are not active anymore. However, poisonous gases from the center of the earth continue to flow up through cracks in the bottom of the lake. This is normal in a crater lake. In most crater lakes, these gases are released often because the water "turns over" regularly. That is, the water from the bottom of the lake rises and mixes with the water at the top, allowing the gases to escape slowly. However, in Lakes Nyos and Monoun, there is no regular turning over. No one knows the reason for this fact, but as a result, these lakes have more gases tapped at the bottom than other crater lakes. In fact, scientists who have studied Lakes Nyos and Monoun have found 16,000 times more gases. When a strong wind, cool weather a storm, or a landslide (滑坡) causes the water to turn over suddenly, the gases escape in a violent explosion. In the past, no one knew when the gases might explode, so there was no way for the villagers to escape disaster. Now scientists from the United States, France, and Cameroon have found a way to reduce the gas pressure at the bottom of Lake Nyos. They stood a 672-foot plastic pipe in the middle of the lake, with one end of the pipe near the bottom and the other end in the air. Near the top of the pipe, the team put several holes that could be opened or closed by a computer. Now, when the gas pressure gets too high, the holes are opened and some of the gas-filled water shoots up through the pipe into the air like a fountain. With less pressure, a disastrous explosion is much less likely. However, the scientists are not sure that one pipe will be enough to prevent explosions. They hope to put in others soon and they plan to install a similar pipe and a computer system at Lake Monoun as well. To protect people nearby until all of the pipes are in place, the scientists have installed early warning systems at both lakes. If the gas pressure rises to a dangerous level, computers will set off loud sirens (警报) and bright lights to warn the people in the villages. That way, they will have time to escape from the dangerous gases.

单选题A Great Quake Coming? Everyone who lives in San Francisco knows that earthquakes are common in the Bay Area-and they can be devastating．In 1906，for example，a major quake destroyed about 28,000 buildings and killed hundreds，perhaps thousands of people．Residents now wonder when the next“Big One”will strike．It's bound to happen someday．At least seven active fault(断层)lines run through the San Francisco area． Faults are places where pieces of Earth's crust(地壳)slide past each other．When these pieces slip，the ground shakes． To prepare for that day，scientists are using new techniques to reanalyze the 1906 earthquake and predict how bad the damage might be when the next one happens． One new finding about the 1906 quake is that the San Andreas Fault split apart faster than scientists had assumed at the time．During small earthquakes，faults rupture(断裂)at about 2.7 kilometers per second．During bigger quakes，however，ruptures can happen at rates faster than 3.5 kilometers per second． At such high speeds，massive amounts of pressure build up，generating underground waves that can cause more damage than the quake itself．Lucky for San Francisco，these pressure pulses(脉冲)traveled away from the city during the 1906 event．As bad as the damage was，it could have been far worse． Looking ahead，scientists are trying to predict when the next major quake will occur．Records show that earthquakes were common before 1906．Since then，the area has been relatively quiet．Patterns in the data，however，suggest that the probability of a major earthquake striking the Bay Area before 2032 is at least 62 percent． New buildings in San Francisco are quite safe in case of future quakes．Still，more than 84 percent of the city's buildings are old and weak．Analyses suggest that another massive earthquake would cause extensive damage． People who live there today tend to feel safe because San Francisco has remained pretty quiet for a while．According to the new research，however，it's not a matter of“if”the Big One will hit．It's just a matter of when．

单选题The once barren hillsides are now good farmland.

单选题Located in Washington, D. C. , the Library of Congress contains an imposing array of books on every conceivable subject. A. history B. catalog C. shelf D. collection

单选题Facebook Wants to "Listen" to Your Music and TV Faeebook is to release a new feature on its mobile app that "listens" to your music and TV shows. If the song or show is recognized by the app, users can publish the information on their profile or to selected friends. The service hopes to take advantage of the "second screen" trend, which sees fans of TV shows in particular sharing their experiences on social networks. However, some users have privacy concerns. The feature, which will be available in a few weeks" time, uses the microphones inside users" smartphones to detect nearby music or TV shows. As the user begins writing a status update, a small animated icon will appear at the top of the app. If the app detects the appropriate audio signals and finds a match from its database, the user can then share what he or she is watching or listening to. Facebook says the feature can be turned off at any time, the audio recording is not stored anywhere and the device cannot identify background noise or conversations. "If you share music, your friends can see a 30-second preview of the song. For TV shows, the story in News Feed will highlight the specific season and episode you"re watching," Facebook said in a statement. The company hopes this new method of sharing user listening and watching habits will take advantage of the five billion status updates related to TV and music experiences that the social networking giant sees on a yearly basis. However, automating part of the sharing process has left some users suspicious, with Nicole Simon commenting on TechCrunch that:" While the idea is nice and technology really interesting, I have no interest in Facebook "observing" my audio and surrounding. Yes, it starts currently as opt-in, and only on occasion, but there is no trust from my side for even that. " The BBC understands that this new feature was not specifically designed to enhance Facebook"s advertising. However, the company could push an advertisement to a user"s phone based on their tracked listening habits. This is in keeping with Facebook"s current approach to advertising, which uses publicly provided information on users" profiles to push advertisements that are more relevant to each individual user. The basic idea behind Facebook"s feature is not a new one—since 2002 Shazam, which has recently seen a $3 million investment from Sony Music Entertainment, has been providing a similar audio recognition service, with its website describing itself as "a mobile app that recognizes music and TV around you" Facebook"s much larger user base could pose a future threat to the comparatively smaller company.

单选题It is the movement not the color，of objects that {{U }}excites{{/U }} the bull．

单选题The river widens considerably as it begins to turn west. A．extends B．stretches C．broadens D．bends

单选题More Than a Ride to School The National Education Association claims, "The school bus is a mirror of the community. " They further add that, unfortunately, what appears on the exterior does not always reflect the reality of a chosen community. They are right—sometimes it reflects more! Just ask Liesl Denson. Riding the school bus has been more than a ride to school for Liesl. Bruce Hardy, school bus driver for Althouse Bus Company has been Liesl's bus driver since kindergarten. Last year when Liesl's family moved to Parkesburg, knowing her bus went by her new residence, she requested to ride the same bus. This year Liesl is a senior and will enjoy her last year riding the bus. She says, "It's been a great ride so far! My bus driver is so cool and has always been a good friend and a good listener. Sometimes when you're a child adults do not think that what you have to say is important. Mr. Hardy always listens to what you have to say and makes you feel important. " Her friends Ashley Batista and Amanda Wolfe agree. Bruce Hardy has been making Octorara students feel special since 1975. This year he will celebrate 30 years working for Althouse Bus Company. Larry Althouse, president of the company, acknowledges Bruce Hardy's outstanding record: "You do not come by employees like Bruce these days. He has never missed a day of work and has a perfect driving record. He was recognized in 2000 by the Pennsylvania School Bus Association for driving 350,000 accident free miles. Hardy's reputation is made further evident through the relationships he has made with the students that ride his bus. " Althouse further adds, "Althouse Bus Company was established 70 years ago and has been providing quality transportation ever since. My grandfather started the business with one bus. Althouse Bus Company is delighted to have the opportunity to bring distinctive and safe service to our local school and community and looks forward to continuing to provide quality service for many more years to come. " Three generations of business is not all the company has enjoyed. Thanks to drivers like Bruce Hardy, they have been building relationships through generations. Liesl's mother Carol also enjoys fond memories of riding Bruce Hardy's bus to the Octorara School District.

单选题Many economists have given in to the fatal lure of mathematics. A．error B．puzzle C．attraction D．contradiction

单选题Mr. Johnson evidently regarded this as a great joke.