单选题 There's no doubt that any proposal which Jack be dismissed must be resisted.
A. that B. as C. what D. in which

【正确答案】 A

【答案解析】[解析] 本句考查的是同位语从句的用法；因为Jack be dismissed must be resisted在句中作proposal的同位语，应用连接代词that引导，它在从句中不做任何语法成分；因此A为答案。