单项选择题

Too much______to X-rays can cause skin burns, cancer or other damage to the human body.

A．disclosure
B．exhibition
C．contact
D．exposure
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单项选择题
I m afraid that this border raid is the______to more serious attacks.
A．description
B．prelude
C．persuasion
D．possession
单项选择题
As our eyes ranged over the broad shoulders of the mountain, the conception of its ______grew upon us.
A．magnitude
B．gratitude
C．multitude
D．latitude
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