Question

【题目】You will surely realize your dream of being a scientist ______ you give it up halfway.

A. though B. if C. unless D. since

Answer 1

【答案】C

【解析】

试题分析：句意：除非你半途而废否则，你一定会实现你成为科学家的梦想。A. though虽然；B. if 如果；C. unless除非；D. since自从。根据句意及语境此题是“除非”的意思，所以应选C。