Question

【题目】A tropical storm hit the island, ______ the power supply.

A. knocking over B. knocking down

C. knocking out D. knocking on

Answer 1

【答案】C

【解析】考查短语辨析。knock over打翻，撞倒；knock down撞倒，击倒；knock out敲空，击倒，打破；knock on敲击，撞击。热带风暴袭击该岛，破坏了电力供应。故选C。