Question

【题目】________ you know little about protecting yourself against the novel coronavirus (新冠病毒), you'd better search for more information about it online.

A.UnlessB.SinceC.ThoughD.Whether

Answer 1

【答案】B

【解析】

句意：既然你对保护自己避免感染新冠病毒不怎么了解，你最好在网上搜寻关于它的更多信息。

考查连词。unless除非；since既然，因为；though虽然；whether是否。“you know little about protecting yourself against the novel coronavirus”表示原因，用since引导原因状语从句。故选B。