Question

【题目】________ children believe they can succeed, they will never become totally independent.

A. If B. Since C. Unless D. Though

Answer 1

【答案】C

【解析】考查连词。A. If如果；B. Since自从；C. Unless除非；D. Though虽然。句意：除非孩子们相信他们能取得成功，否则他们将永远不会完全独立。此处表示“除非”，其他项代入句中不合语境，故选C。