问题
单项选择题 A型题
尿液呈碱性时抗菌活性增加、使肾毒性减轻的抗生素类别是（）
A．头孢菌素类
B．大环内酯类
C．碳青霉烯类
D．林可霉素类
E．氨基糖苷类
答案
参考答案：E
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尿液呈碱性时抗菌活性增加、使肾毒性减轻的抗生素类别是（）
A．头孢菌素类
B．大环内酯类
C．碳青霉烯类
D．林可霉素类
E．氨基糖苷类
参考答案：E
Is global warming killing the Maldives? The Maldives(马尔代夫) is one of the most beautiful countries in the world. Every year, millions of go there to enjoy the wonderful scenery. And in recent years, more and more people would like to visit it, ? Because the little island country is . If global warming , say scientists, the country will go down into the ocean within 100 years. That means the Maldives have disappeared by 2100. The Maldives in the Indian Ocean. It is the country on earth—its highest point is only 2.4m above sea level. Greenhouse gas emissions（排放）, global temperature and sea levels will rise 9cm and 88cm by 2100. If scientists are , most of the Maldives will be covered with water in years. Last October, Maldivian President Mohamed Nasheed and his cabinet（内阁）held the world’s first underwater cabinet meeting to make the world the terrible results from global warming to their own country. In December, he at the 2009 United Nations Climate Change Conference（大会） in Copenhagen, trying to ask for help from the world for country. The president even has a to buy a new homeland and move his country and people to a new place. The Moldavian government has been doing all it can to fight the . But the fate（命运）of the islands is in the world’s hands. No one wants to see this little island country disappear from the world.
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