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The 12th Five-Year Plan said a system to protect people's secrets on line. [ ]A.

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The 12th Five-Year Plan said a system to protect people's secrets on line. [ ]A.

The 12th Five-Year Plan (2011-2015) said a system _____ to protect people's secrets on line. [     ]A. would be developed
B. has been developed
C. was developed
D. had been developed

试题答案

A

标签：systemsaidtopeopleprotect

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