A. optimistic

　　B. doubtful

　　C. pessimistic

　　D. sensitive

　　【解析】选C。观点态度题。根据文章最后一句话I do think what we will be facing is the extinction of many species. 可以看出他是持悲观态度。

　　. 阅读第二节

　　(2017·南阳模拟)

　　Do you know what a big dream is? 　1　Or, is a big dream something that provides only entertainment? Children dream big dreams, but there are three barriers to realizing dreams. They often kill them before they ever have a chance to grow.

　　The Self

　　Immediately following the birth of a big dream, a negative self-talk takes over and gives all the reasons why it cannot happen. This inside voice is the ego(自我). It’s there for protecting and should be listened to. 　2　Most people are influenced by the inside voice. That’s why only a handful of people make their dreams come true.

　　　3　

　　Family and friends are a lot like the ego. They want to protect those they love, so they will often list all the reasons why the big dreams won’t come true. Sometimes, family and friends destroy dreams of those they love most, out of their own fear of being left behind.

　　The World

　　If one gets past the first two barriers, one has to face the world. 　4　In the past, big dreamers were locked up and sometimes even killed when they were shown to the world. Fortunately, in most of the world today, big dreamers just get laughed at.

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