单项选择题

It took him a long time to______ the skills he needed to become a professional artist.

A．acquire
B．gain
C．achieve
D．retain
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单项选择题
Her good looks and confident,______ manner made her the centre of attention.
A．elaborate
B．elegant
C．excessive
D．exaggerated
单项选择题
Trade secrets and______ information are likely to be among the most valuable assets of many businesses.
A．secret
B．private
C．intimate
D．confidential
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