硫酸盐还原菌能够起（）作用，从而加速金属的腐蚀。
参考答案：阴极去极化
The lesson drawn from the coal mine accidents is that safety measures are so important that we _____ take them too seriously.
A．can’t
B．should
C．mustn’t
D．shall
群众性精神文明创建活动的基本特点是什么？
