Everybody was required to keep the future plan in______.A、safetyB、secretC、secu

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问题 Everybody was required to keep the future plan in______.

选项 A、safety
B、secret
C、security
D、secrecy

答案 B

解析 短语辨析题。句意:要求人人都要对这个计划保密。in secret是保密的意思。
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