法律是掌握国家 * * 的_______意志的体现。
统治阶级
When chatting with a stranger on the Internet, bear in mind______ he could be anybody, for you can’t see him _________.
A．that; in particular
B．that; in person
C．what; in detail
D．\ ; in public
孵化用水的溶氧应为（）。
A、>4mg/L
B、>3mg/L
C、>2mg/L
