单选题 I have no doubt ______ most of the students in our class can pass the final examination.
A.that B.as C.whether D.although

【正确答案】 A
【答案解析】[解析] 本题考查同位语从句的用法。由that引导的同位语从句,其先行词一般是抽象名词,that不可以省略。这类词有:fact,news,hope,belief,doubt等。