简述预测找矿工作中的地层、岩相、古地理因素研究要点_爱下问搜题

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问题问答题简答题

简述预测找矿工作中的地层、岩相、古地理因素研究要点

答案

参考答案：

（1）对地层：地层的含矿性分析、成矿序列，地层岩性对成矿的影响；

（2）对岩相：不同岩相与成矿的关系，同一岩相内相变分带对成矿的影响及对找矿的意义；

（3）古地理：不同地理条件对成矿的影响及联系，古地理条件的恢复对找矿工作的指导作用。

完形填空

While attending a conference, I returned to my hotel room late one evening. The overhead light outside my door was burned out and I had       finding the keyhole. When I       to open the door, I       around the wall for a light switch. I found a plate where a switch was       installed... but no switch!
Not discouraged easily, I remembered       a lamp by the bed when I deposited my luggage      in the day. I found the bed in the       and then the lamp, but when I switched it on, nothing     ! I thought that perhaps if I opened the curtains I might be able to use whatever light comes in from the       to find another lamp. So I  my way slowly across the room to the curtains and... no drawstring（拉绳）! I finally stumbled（跌跌撞撞地走）around        I found a desk lamp which actually     !
That evening I discovered in a whole new way just how dark the world       be and how   necessary light is! But even more necessary than       light is the light that shines from people --the light of       and faith. Because, for many people, the world is a dark and       place. For someone today just may be stumbling in discouragement or sadness or fear and in        of some light. So let your light shine. Whatever light you       may be a beacon（灯塔） of hope and encouragement. And if you feel that your light is       a candle in a forest remember -- there isn’t enough darkness in all the world to       the light of one small candle.

B．psychological

A．not more than

C．no more than

D．rather than

单项选择题

下列有关《德意志帝国宪法》的表述中，能说明“立宪”是虚、“君主”是实的是（）

①国家元首有权签署和公布法律并监督法律的实施

②参议院和众议院组成的两院制议会控制立法权

③国家元首由参议院和众议院联席会议选出

④皇帝有权召集、召开联邦议会和帝国议会

A.①②

B.②③

C.①④

D.③④