Question

【题目】_________ jokes are likely to contribute to a pleasant atmosphere, you’ve got to be careful not to hurt others.

A. Since B. While

C. If D. As

Answer 1

【答案】B

【解析】考查状语从句。尽管笑话很可能有助于营造一种愉快的气氛，但我们必须小心不要伤害了别人。根据句意可知选B。