岩溶发育的条件为()。
A、具有可溶性岩层
B、具有溶解能力(含CO2)和足够流量的水
C、地表水有下渗，地下水有流动的途径
D、A+B+C
参考答案：D
The way children learn about the world is _______ that of grown-ups — the former by eyes while the
latter by sense.[ ]
A. anything like
B. feel like
C. nothing like
D. something like
二氧化碳贮气瓶用称重法检验泄漏量。
