Goji system

　　For the Einstein of digital unlocking devices,go for the Goji system($245).It replaces your lock and features an LED display that flashes a personalized greeting as you approach the front door.It also has a built-in camera,which takes a photo of visitors(expected or not) and sends it straight to your smart-phone.Watch out for thieves.

　　Kwikset Kevo lock

　　The Kwikset Kevo lock($219) offers the ease and convenience of digital access with a traditional “key” feel.A little device called the Fob—roughly the size of a stick of gum—easily fits on your key chain and operates with the lock:All you have to do is tap the two of them together to unlock the door.

　　【语篇导读】本文是应用文。文章介绍了四种智能门锁。

　　5.What is special about the August Smart Lock?

　　A.It is updated every August.

　　B.It provides the highest security.

　　C.The door automatically locks after your guests leave.

　　D.The door automatically opens for your expected friends.

　　答案:D

　　解析:细节理解题。根据第二段中的“sense and give access to those with approved smartphones.Approach the entry while logged in to your account,and the door will automatically unlock.You can temporarily add a friend...”可知答案。

　　6.The underlined word “them” in the last paragraph refers to 　. 

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