在将一台linux计算机配置为samba服务器时，若要以只读方式共享/files目录，只有managers组（成员：mary、tony）可以访问，以下关于访问用户限制的设置正确的是（）。
A、valid users=mary tony
B、write list＝mary tony
C、invalid users=mary tony
D、valid users=@managers
E、valid list=mary tony
参考答案：A, D
请阅读下面短文，根据短文内容从方框的七个选项中，选择五个适当的句子还原到文中，使短文意思通顺，结构完整。（每小题2分） Dear Editor, I am a doctor in the Children’s Hospital. I saved a lot of sick children小题1: Sometimes parents are careless. They put medicine in low(低的)places and their children can get it easily小题2: They just know it tastes(尝起来) sweet. They may get the medicine and eat it. So parents should put medicine away or keep it in a high(高的)place. There is also another reason: Children can easily open the medicine bottles(瓶子). 小题3: He showed me a kind of plastic(塑料的)medicine bottle. We can open it by only pressing down the lid(按下盖子)while turning. 小题4: However, parents can open it very easily. Making the bottles is quite easy. 小题5: And I hope parents can be more careful. Then the children will be safer. Yours, Wang Fang
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