Tom agrees with Judy about face-to-face communication. ( )
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Tom thinks that it’s easy to write replies to all the emails.( )
A. 对
B. 错
Both Tom and Judy think that QQ and WeChat are convenient, economical and time-saving.( )
A. 对
B. 错
( )发生于装载网页后。
A. onload事件
B. onunload事件
C. onSubmit事件
D. onReset事件
当前元素的内容发生改变时触发( )。
A. onfocus事件
B. onchange事件
C. onblur事件
D. onsubmit事件