单选题
I don't think it's wise of you to______ your greater knowledge in front of the director, for it may offend him.
A、
show up
B、
show out
C、
show in
D、
show off
【正确答案】
D
【答案解析】
[解析] D项show off意为“炫耀，卖弄”，符合题意。A项show up意为“使露出”； B项show out意为“送出”；C项show in意为“领入”。
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