A(n) ________ to the present project should be put in place in case the present

题干

A(n) ________ to the present project should be put in place in case the present one doesn’t work.

A．barrier	B．approach
C．alternative	D．access

上一题下一题 0.85难度单项选择更新时间:2018-10-16 05:34:12

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