能够生成石油和天然气的岩层称为生油层,主要是粘土岩和()。
A、火成
B、石灰
C、岩浆
D、碳酸盐岩
参考答案:D
在进行一项调查活动过程中,首先要明确调查目的,并写出调查提纲,在调查时要做好调查记录,最后予以分析归纳,撰写()。
I cannot spend _____ money on the car which is _____ expensive for me. [ ]
A. too much; much too
B. far too; too much
C. much too; too much
D. too many; much too