All of the machinery must be carefully inspected before production at the pla...

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问题 All of the machinery must be carefully inspected before production at the plant is allowed to__________ .

选项 A.inhibit
B.comply
C.motivate
D.proceed

答案D

解析分析整句的意思,“before”引导的状语从句表示“准许进行生产”.因此意为“进行”的D为正确答案。
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