单项选择题

Heavy rains were causing inundation and much damage throughout the country.

A．much inconvenience
B．serious concern
C．overflow of water
D．human misery
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单项选择题
Because alcohol is a solvent, it is a component of many liquid medicines.
A．basic ingredient in making medicines
B．combination of things of different qualities
C．one of the parts that make up a whole
D．substance that helps to cure certain diseases
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