问题 更新时间2023/4/3 12:59:00 The phrase “this element of the unknown” (Paragraph 3) refers to ___________.A、the extension of earthquake zonesB、the percentage of earthquake occurrencesC、when and where earthquakes may occurD、what big damage earthquakes may cause 答案 登录 注册 C、when and where earthquakes may occur 出自:文鼎教育 >> 四川民族学院大学英语A卷