【简答题】Many Americans use smartphones for most or all of their day-to-day communication activities. One result is that people have gotten 1. ___ ___ ___ ___ ___ ___ ___ ___ ___ on their phones. But how fast ...
【简答题】Many Americans use smartphones for most or all of their day-to-day 1 activities. One result is that people have gotten faster and better at typing emails and text messages on their phones. But how fas...