【解析】选D。词义猜测题。根据文章最后一句可以猜测出作者认为我们对未来应该持积极乐观的态度, 故选D项。

　　. What does the passage mainly talk about?

　　A. How people will communicate in the year 2050.

　　B. What our life will be like in the year 2050.

　　C. How people will travel and spend their holidays in the year 2050.

　　D. What high technology will appear in the year 2050.

　　【解析】选B。主旨大意题。文章的第一段就是本文的中心, 即设想2050年的生活是什么样子的, 故选B项。

　　（2016高考训练）阅读下列材料，从每题所给的选项中选出最佳选项。体裁：记叙文　话题：人与自然　词数：675　时间：6′

　　My story is from my college days.One of my geology professors got me involved in mountain climbing.Since he and I climbed at roughly the same pace, we made perfect companions on the trail.On one trip, we hooked up with the Colorado Mountain Club to climb Mount Massive, the second highest mountain in Colorado and fourth highest in the Lower 48 states.

　　The day started out great.It was a beautiful sunny day.The CMC folks decided they wanted to take an “alternate” route up the mountain rather than the established trail.The alternate route was straight up the west (steep) side.CMC is synonymous with mountain goat.Most of these folks scurried up the mountain like most people climb a set of stairs at the mall.Carl and I were a bit slower, quite a bit slower.

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