问题
单项选择题
___( )___ are web sites that search the web for occurrences of a specified word or phrase.
A．Search engines
B．WWW
C．Internet
D．Java
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
___( )___ are web sites that search the web for occurrences of a specified word or phrase.
A．Search engines
B．WWW
C．Internet
D．Java
参考答案：A