It was now clear that no such weapons were manufactured and none been found.A、wa

游客2023-12-26 17

问题 It was now clear that no such weapons were manufactured and none been found.

选项 A、was found
B、were founded
C、has been found
D、have been founded

答案 A

解析时态应用。“and”连接的两部分是并列关系，时态应一致，因而排除C、D。found是find的过去式，表“发现”；founded是found的过去式，表“建立，创立”，根据题干意思，本题应选A。

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Itwasnowclearthatnosuchweaponsweremanufacturedandnonebeenfound.A、wa