单项选择题
A.2-4-1-3B.1-2-4-3C.1-3-4-2D.2-4-3-1
A.组织运行活动的外部存在B.各种天然的和经过人工改造的自然因素的总体C.废水、废气、废渣的存在和分布情况D.周边大气、阳光和水分的总称
A.forbid their employees to get online at workB.respect the online privacy of their employeesC.reveal the privacy of their employees publiclyD.monitor the online activities of their employees