题干

阅读材料,回答问题。

据报道,西部大开发调研组在河西走廊的调研中,发现了一处面积100多平方千米、形状特殊的花岗岩地貌,其外围分布着沉积岩。该处花岗岩岩体表面千疮百孔,形如“蜂巢”。“蜂巢”组合在一起,如流云翻浪、似百兽飞禽。伟硕的岩体已被侵蚀得薄如蛋壳。花岗岩岩体绵延分布数里,相对高度在百米以下。据分析,此处的花岗岩形成距今不到一亿年,在花岗岩体的外围露出的是距今5亿年至4亿年的沉积岩地层。

关于此处花岗岩与沉积岩关系的说法,正确的是(  )

A:花岗岩先形成,沉积岩后形成,然后外力作用进行长期侵蚀

B:沉积岩先形成,花岗岩后形成,然后外力作用进行长期侵蚀

C:沉积岩与花岗岩同时形成,然后外力作用进行长期侵蚀

D:根据材料,无法判断

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答案(点此获取答案解析)

B

同类题3

阅读下面短文,掌握其大意,从每题所给的A、B、C、D四个选项中,选出最佳选项。

    If life were a book and you were the author, how would you like the story to go? That is the question that 1 my life forever.

    One day I went home from the training of snowboarding with what I thought was the flu, and less than 24 hours later, I was in a 2 on life support with less than two percent 3 of living. It wasn't until days later that the doctors diagnosed me with a 4 blood infection.

    Over the 5 of 2.5 months, I lost the hearing in my left ear and both my legs below the knee. When my parents 6 me out of the hospital, I 7 that I had been put together like a patchwork(拼缝物) doll and I had to live with 8 legs. I was absolutely physically and emotionally broken, 9 streaming down.

    But I knew in order to move forward, I had to let go of the Old Amy and 10 the New Amy. It was at this moment that I asked myself that significant 11. And that is when it 12 me that I didn't have to be five-foot-five anymore,13 I could be as tall as I wanted. And 14 of all, I can make my feet the size of all the shoes. So there were 15 here.

    Four months later, I was back upon a 16. And this February, I won two Board World Cup gold medals, 17 me the highest ranked snowboarder in the world.

    So, instead of looking at our 18 and our limitations as something 19 or bad, we can begin looking at them as a wonderful 20 that can be used to help us go further than we ever know we could go.