题目内容
五加科植物人参中含有多种人参皂苷,绝大多数属于()四环三萜。
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下列化合物呈中性的是
Low Carbon Life (低碳生活)Months ago, a milestone(里程碑) in movie history named Avatar was favored by people around the world. Everyone who has watched the movie is charmed by the amazing views on the 1_________ of Pandora. People living in crowded and busy cities are all dying to get in touch with 2____________.In fact, we don’t have to be an avatar; our ancestors(祖先) used to live that way. However, the development of 3________destroyed the peace of the primitive nature. Trees fell down while high buildings stood up. Animals 4___________ while cars emerge from everywhere. Blue sky became 5__________. However, what is more, people seem 6_________of what was and is still happening around. Human beings are still living a 7________ life style of high energy consumption. Every percent of economic growth is made at the cost of the consumption of huge 8___________ and emissions of carbon dioxide(二氧化碳).The wasteful use of resources has caused serious problems such as global warming and dramatic climate change. We must realize that the resources on the earth are limited. When we use the resources wastefully, we are actually 9__________ from the future generations.We have done too much wrong. Now it’s time to convert our conceptions and lead a brand-new life style ---10 ____________.
保险的合同具有射幸性和附和型特点。
鸵鸟属于小牲畜保险的对象。
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