Question

—The experiment is of particular importance.

　　　　—I see. We will carry on with it ________ we can get enough money.

　　A. unless　　　　B. though　　　　C. whether　　　　D. until

Answer 1

C

解析:

whether引导名词性从句时，意为“是否”。若其引导状语从句，意为“不论是否……”。