单项选择题

I bought an alarm dock with a(n)______ dial, which can be seen dearly in the dark.

A．audible
B．amplified
C．supersonic
D．luminous
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单项选择题
By the time you get to New York, I______ for London.
A．would be leaving
B．am leaving
C．have already left
D．shall have left
单项选择题
Investigators agreed that passengers on the airliner______ at the very moment of the crash.
A．should have died
B．must be dying
C．must have died
D．ought to die
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