. Why can’t marmots find enough food when they wake up?

　　A. Because there are too many marmots in the wild now.

　　B. Because plants haven’t received enough sunlight for spring growth.

　　C. Because winter days end much earlier than before.

　　D. Because more and more animal species skip hibernation now.

　　【解析】选B。细节理解题。由倒数第二段中的but plants will not have got the amount of sun they need to signal their spring period of growth可知答案为B项。

　　9. Terry Root holds a(n)　attitude towards the future of animals.

　　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。

　　阅读理解 (2017·合肥模拟)

　　In the quest for better health, many people turn to doctors, self-help books or herbal supplements. But they overlook a powerful weapon that could help them fight illness and depression, speed recovery, slow aging and prolong life: their friends.

　　Researchers are only now starting to pay attention to the importance of friendship and social networks in overall health. A 10-year Australian study found that older people with a large circle of friends were 22 percent less likely to die during the study period than those with fewer friends. A large 2007 study showed an increase of nearly 60 percent in the risk for obesity among people whose friends gained weight. And last year, Harvard researchers reported that strong social ties could promote brain health as we age.

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