单项选择题

Too much _______ to X-rays can cause skin bums, cancer or other damage to the body.

A．exposure
B．disclosure
C．contact
D．exhibition
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单项选择题
If we go on consuming energy so wastefully, ________ are our oil wells will be dried up before new energy resources can be found to replace oil.
A．chances
B．opportunities
C．questions
D．problems
单项选择题
They were ________ hurt by your rude remarks.
A．very much
B．badly
C．seriously
D．costly.
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