单项选择题

What is the attitude of the committee built by the British Parliament towards Edison's idea

A．Doubtful.
B．Scornful.
C．Critical.
D．Suspicious.
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单项选择题
The word nosedived ( Line 3, Para. 1 ) most probably means ______
A．dropped
B．rose up
C．steadied
D．changed
单项选择题
Which of the following is TRUE according to the passage
A．Edison's electric bulb was once regarded by some British "experts" as good enough only for Americans.
B．Edison always had scientific shortsightedness.
C．Edison agreed with the idea of alternating current.
D．Edison thought heavier-than-air flight impossible.
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