問題詳情
30.If you carry keys, knives, aerosol cans, etc., in your pocket when you pass through the security at the airport, you may __________ the alarm, and then the airport personnel will come to search you.
(A) let on
(B) let off
(C) set on
(D) set off
參考答案
答案：D
難度：困難0.25
統計：A(3),B(2),C(6),D(4),E(0)
用户評論
【用戶】柯文容
【年級】國三下
【評論內容】aerosol 噴霧器set off v.出發,動身,使爆炸,引起,使爆發,抵銷,分開,襯托