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（B）For high school leavers starting out in the working world, it is very important to learn particular skills and practice how to behave in an interview or how to find an internship (实习)．In some countries, schools have programs to help students onto the path to work．In the United States, however, such programs are still few and far between．Research shows that if high schools provide career-related courses, students are likely to get higher earnings in later years. The students are more likely to stay in school, graduate and go on to higher education.In Germany, students as young as 13 and 14 are expected to do internships. German companies work with schools to make sure that young people get the education they need for future employment.But in America, education reform programs focus on how well students do in exams instead of bringing them into contact with the working world. Harvard Education school professor Robert Schwartz has criticized education reformers for trying to place all graduates directly on the four-year college track. Schwartz argued that this approach leaves the country’s most vulnerable (易受影响的) kids with no jobs and no skills.Schwartz believed that the best career programs encourage kids to go for higher education while also teaching them valuable practical skills at high school. James Madison High School in New York, for example, encourages students to choose classes on career-based courses. The school then helps them gain on the job experience in those fields while they’re still at high school.However, even for teens whose schools encourage them to connect with work, the job market is daunting. In the US, unemployment rates for 16 to 19-year-olds are above 20 percent for the third summer in a row.“The risk is that if teenagers miss out on the summer job experience, they become part of this generation of teens who had trouble in landing a job,” said Michael, a researcher in the US. What’s the main idea of the text?（）
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（C）Honey (蜂蜜) from the African forest is not only a kind of natural sugar, it is also delicious. Most people, and many animals, like eating it. However, the only way for them to get that honey is to find a wild bees’ nest (巢) and take the honey from it. Often, these nests are high up in trees, and it is difficult to find them. In parts of Africa, though, people and animals looking for honey have a strange and unexpected helper—a little bird called a honey guide.The honey guide does not actually like honey, but it does like the wax (蜂蜡) in the beehives (蜂房). The little bird cannot reach this wax, which is deep inside the bees’ nest. So, when it finds a suitable nest, it looks for someone to help it. The honey guide gives a loud cry that attracts the attention of both passing animals and people. Once it has their attention, it flies through the forest, waiting from time to time for the curious animal or person as it leads them to the nest. When they finally arrive at the nest, the follower reaches in to get at the delicious honey as the bird patiently waits and watches. Some of the honey, and the wax, always falls to the ground, and this is when the honey guide takes its share.Scientists do not know why the honey guide likes eating the wax, but it is very determined in its efforts to get it. The birds seem to be able to smell wax from a long distance away. They will quickly arrive whenever a beekeeper is taking honey from his beehives, and will even enter churches when beeswax candles are being lit. Why is it difficult to find a wild bees’ nest?（）
两轴之间的相互位置关系为相错时，两轴之间的传动可选用（）
（A）Here is your best chance to travel around the UK in 2012: More than 200 B&Bs (bed & breakfast) across England, Scotland, Wales and Northern Ireland are selected to offer you amazing services for your stay at their lowest prices! Don’t miss it. Just collect the vouchers (活动券) in ourB&B Daily printed from 01/04/2012 to 07/04/2012 and book the stays for your travel following the terms and conditions below:●The offer includes a room for the night and a breakfast the next morning.●The offer is of two kinds:￡20 per room, per night, valid (有效的) during stay period of 02/04/2012—31/05/2012 and then again 01/09/2012—31/10/2012；￡35 per room, per night, valid during stay period of 01/06/2012—31/08/2012.●The offer is valid for a basic twin or double room only.●The stay must be booked directly with the chosen B&Bs before 28/04/2012.●Each voucher can only be used by the holder to book one room for one night.●If voucher holders book either the ￡20 or ￡35 per room per night, any additional services such as lunch, evening meal or activities may require an extra charge. But these are not required in order to takeup the offer. Please check directly with your chosen B&Bs to see what extra services are available.●Vouchers must be presented on arrival. If no vouchers are presented, the B&Bs may reserve (保留) the right to charge at full price for every night of stay.●Vouchers may not be used together with any other offer.●The voucher holders must pay for the stay in full at the time of booking. Additional ￡10 may be paid to confirm (确认) the booking and will be returned on arrival.●The B&Bs reserve the right to refuse voucher holders’ bookings for people under the age of 18. By taking up the offer, the voucher holders can choose to （）.
采用结构化设计方法所设计的系统，其模块的主要特点之一是（）
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