Most smart phones have（ ）service capabilities,which means that apps that combine the phone user"s location with the availability of retail stores and services can be interwoven into creative mobile business opportunities.

单选题

Most smart phones have（ ）service capabilities,which means that apps that combine the phone users location with the availability of retail stores and services can be interwoven into creative mobile business opportunities.

答案解析

单选题

（72）operating systems are used for handheld devices such as smart-phones.

答案解析

单选题

Since tablet computers and smart phones have（71）interface, many people believe that all home and business computers will eventually have this kind of interface too.

答案解析