单项选择题
He is regarded by all as a genius,（）the important discovery was made.
A．who B．whom C．about whom D．by whom
单项选择题 Mr.Jason Matthews,（）collection of pictures a valuable Rembrand was given to the nation, died last night.
单项选择题 The voters were overwhelmingly against the candidate（）proposals called for higher taxes.
单项选择题 Florida,（）is reported, attracts 800 thousand tourists every year.
