While phones are less likely to be targeted by viruses than home computers, it's important to know there are simple things you can do to keep your smartphone and your data safe. Lock your screen. A password is your first defense against unauthorized (未经授权的)access to your data. It's a good idea to use it. To keep your smartphone and data safe, you should ______.A. lock your screen with a passwordB. never lend your phone to other peopleC. refuse to receive any call from strangersD. download special software for your phone

本题考查对文章细节信息的理解。解题思路是仔细阅读文章，找出与保持智能手机和数据安全相关的具体措施，然后将各选项与文章内容进行逐一比对。

• 文章中明确提到“Lock your screen. A password is your first defense against unauthorized (未经授权的)access to your data. It's a good idea to use it.”，意思是锁定屏幕，密码是防止未经授权访问你数据的第一道防线，使用密码是个好主意。
• 选项A：“lock your screen with a password”，即使用密码锁定屏幕，与文章中提到的保持安全的措施一致，所以该选项正确。
• 选项B：文章中未提及“never lend your phone to other people”（永远不要把手机借给别人）相关内容，所以该选项错误。
• 选项C：文章没有提到“refuse to receive any call from strangers”（拒绝接收任何陌生人的电话）这一保持安全的方法，所以该选项错误。
• 选项D：文中没有提到“download special software for your phone”（为你的手机下载特殊软件）来保障安全，所以该选项错误。