In all, 6000 companies are（）producing the parts that are needed for these aircraft. -焚题库

来源：焚题库 2019-10-18

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语法与词汇

In all, 6000 companies are（）producing the parts that are needed for these aircraft.

A.eoncemed<br />
B.recommended<br />
C.involved<br />
D.offended<br />

正确答案：C

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