试题详情
单项选择 适中0.65 引用2 组卷94
A 170 million-year-old “flower” ________ in Northwest China recently by Chinese scientist.
A.will be coveredB.is inventedC.was discovered
2023·四川成都·二模
知识点:discoverinvent动词辨析一般过去时的被动语态 答案解析 【答案】很抱歉,登录后才可免费查看答案和解析!