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观察数列找规律:15,14,12,9,5,(),括号里的数是下面哪一个()
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Passage twoQuestions 5 to 8 are based on the following passage.More students than ever before are taking a gap year (间隔年) before going to university. It used to be called the "year off" between school and university. The gap-year phenomenon originated (起源) with the months left over to Oxbridge applicants between entrance exams in November and the start of the next academic year.This year, 25,310 students who have accepted places in higher education institutions have put off their entry until next year, according to statistics on university entrance provided by the University and College Admissions Service (UCAS).That is a record 14.7% increase in the number of students taking a gap year. Tony Higgins from UCAS said that the statistics are good news for everyone in higher education. "Students who take a well-planned year out are more likely to be satisfied with, and complete, their chosen course. Students who take a gap year are often more mature and responsible," he said.But not everyone is happy. Owain James, the president of the National Union of Students (NUS), argued that the increase is evidence of student hardship — young people are being forced into earning money before finishing their education. "New students are now aware that they are likely to leave university up to ￡15,000 in debt. It is not surprising that more and more students are taking a gap year to earn money to support their study for the degree. NUS statistics show that over 40% of students are forced to work during term time and the figure increases to 90% during vacation periods," he said. 8. What would most students do on their vacation according to NUS statistics?
Passage oneQuestions 1 to 4 are based on the following passage.When the natural climate changes due to global warming, it can surely affect seals. The majority of them live in the Antarctic region so as the ice is melting, their natural habitat (栖息地) can be seriously affected. These changes don’t take place overnight. They can be the result of many years of additional temperatures in the area. The seals then have to find ways to adapt. Seals depend on the cool air currents to bring plenty of food for them. When the temperatures get higher, there is less and less food and the seal population starts to get depleted. Mothers aren’t healthy enough to feed their babies. Many of the babies end up abandoned as the mothers have to leave to find their own source of food. The fact that their desire to produce young can be changed by the warmer temperatures is frightening too. It is also believed that the warmer temperatures can allow different diseases and viruses to attack the seals. This is a huge concern as they can rapidly wipe out huge numbers of seals out there.However, these changes in climate and temperature aren’t all bad for other species of seals. Scientists have found that those living in warmer climates are producing more young due to the changes. Research also shows that the females are moving further to find food and water. When they are out of the reach of the governing males, they are more willing to accept the moves of other males in the group. This is good news too because it means that there will be more selection in the gene pool (基因库) for future generations. It can help the seals as a species adapt to changes in their natural environment more easily. The climate change problem for seals is directly linked to humans. When we take action to change what we let out into the environment, we will make positive changes for the seals. However, it is going to take a very long time to reverse (彻底改变) the effects of what has already been done.2. What does the author regard climate changes for seals as?
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