—You're coughing a lot. You'd better smoking now.
—That's really hard for me.
A:give up
B:go on
C:set up
375+283+325+17=____
根据要求,完成任务。
爸爸买了智能手机,他听说用wi—Fi上网会有风险。请你根据知识卡片提供的相关信息,告诉爸爸在公共场合使用Wi—Fi的注意事项,以有效保护个人信息。要求表达合理、得体,字数在80字以内。