单项选择题
A．who B．whose C．whom D．which
Florida,（）is reported, attracts 800 thousand tourists e...
单项选择题Florida,（）is reported, attracts 800 thousand tourists every year.
A．which B．as C．where D．who
Besides the electrons, an atom also contains positive e...
单项选择题Besides the electrons, an atom also contains positive electrical particles（）total charge must be equal to that of the electrons.
A．which B．that C．whose D．of which
Where is the article（）you quoted this line A．where B．wh...
单项选择题Where is the article（）you quoted this line
A．where B．which C．from where D．from which
