语法与词汇
Having a powerful computer _____, John might easily be content with this gain in performance.无
A、
in his mind
B、
at his disposal
C、
at his wits’ end
D、
at one’ s convenience
【正确答案】
B
【答案解析】
at one’ s disposal由其支配。 at one’ s wits’ end不知所措； 无计可施。 at one’ s convenience在某人方便之时。
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