The anti-virus agent was not known ______ (直到一名医生偶然发现了它).until a doctor discover

游客2024-01-26 33

问题 The anti-virus agent was not known ______ (直到一名医生偶然发现了它).

选项

答案 until a doctor discovered/found it by chance/accidentally

解析本题考点在于以下两点：(1)表示“直到……”用until；(2)中文中的“偶然”用by chance或者accidentally表达。

转载请注明原文地址:https://tihaiku.com/zcyy/3395877.html

相关试题推荐

随机试题

最新回复(0)

【B1】[br]【B17】A、identifyB、locateC、revealD、discoverA动词辨义。identify“识别，认出”，符合句