问题
单项选择题
我国从什么时候开始正式将螺旋藻的人工养殖研究纳入国家计划的。（）
A、20世纪60年代中期
B、20世纪80年代中期
C、20世纪90年代中期
D、20世纪70年代中期
答案
参考答案：D
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我国从什么时候开始正式将螺旋藻的人工养殖研究纳入国家计划的。（）
A、20世纪60年代中期
B、20世纪80年代中期
C、20世纪90年代中期
D、20世纪70年代中期
参考答案：D
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| Some countries are better than others at looking after the environment. In Europe, Germany and the northern European 1 work very hard to improve the environment. People in countries such as Germany put their garbage into 2 bags-paper in one bag, plastic in another bag, etc. The garbage is then 3 and, if possible, recycled. CFCs (chlorofluro-carbons), chemicals which are found in refrigerators and aerosol cans, are not 4 . There are laws 5 do not allow people to burn 6 coal (煤). In the 7 , as people learnt more about environmental problems, the "Green" movement began and soon spread all over Europe. The"Green" movement tries 8 governments to think 9 about the environment and how to look after it. It 10 information about how industry is damaging the environment and gives this information to newspapers. | ||||
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