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问题 解答题

长三角地区经济几年来一直保持着健康快速发展的良好态势，居民收入水平持续增长．长三角16城市居民人均收入2006年比上一年增长了13%，2007年比上一年增长了14.4%，2007年人均收入已达到19719元．请根据题意，解答下列问题：

（1）2006年和2005年长三角16城市居民人均收入各是多少元？

（2）假设2005年到2007年，每年的人均收入增长率相同，按照这个增长率，预计2008年长三角16城市居民的人均收入将达到多少元？（以上计算结果都要求精确到1元）

答案

（1）设2005年的16城市居民人均收入是x元，

（1+13%）x（1+14.4%）=19719，

x=15254，

15254×（1+13%）=17237．

2005年的收入是15254元，2006年的收入是19719元．

（2）设2005年到2007年，每年的人均收入增长率是x．

15254（1+x）2=19719，

x=12.9%或x=-212%（舍去）．

17919×（1+12.9%）=20231．

2008年的收入是20231元．

完形填空

Olympic building projects are at risk because skilled Polish workers are going back home and there are not enough skilled British workers to replace _小题1:__ . A quick training plan is being put in place to teach British people basic construction __小题2:__ specifically for Olympic projects. As the Polish builders are beginning to go back home, migrant workers from other parts of Eastern Europe are taking their places; __小题3:__, they don’t seem to be as well trained or have the same work ethics as the Polish workers. The Olympic Delivery Authority, the London Development Agency (LDA) and other partner organizations are going to spend ￡20 million —23 per cent of  小题4:   training budget for London 2012 —in increasing the skills of the British workforce to _小题5:_ the construction needs of the Olympics. They are also training electricians. A total of 1,500 workers nationwide will become fully skilled electricians _小题6:__ attending the program. These workers will then work on building the Olympic Village. Iain MacDonald, head of a training program, told TheTimes, "All the way along we have been holding the view   小题7: we can’t rely on migrant labour. We have to put in plans for the long term. We can’t rely on migrant labour all the time. Britain has become too dependent on the migrant labour force. It is better to develop the skills of the 小题8: population."
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单项选择题

病原未明的脑膜炎首选（）

A.青霉素

B.万古霉素

C.氨苄青霉素

D.氨苄青霉素大剂量的青霉素

E.第三代头孢菌素
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