国庆我去湖南张家界旅行,捡到一块奇怪的黑色石头。我一心想知道这是什么石头,可在电脑上搜索了半天也找不到答案,爸爸也疑惑不解。我想来想去,忽然想到一个好办法,那就是先捡回一块普通石头,再和我那奇怪的石头相撞,撞成两半,再看看里面究竟有些什么矿物质。结 National Day I went to Zhangjiajie, Hunan travel, picked up a strange black stone. I was bent on knowing what it was and searching on the computer for a long time could not find the answer, my father puzzled. I wanted to go, I suddenly thought of a good idea, that is, first retrieve a piece of ordinary stone, and then collided with my strange stone, hit in half, then look inside what exactly minerals. Knot