Question

In your class, you should allow students to voice their opinions,       they are different from your own.

A．until

B．unless

C．even if

D．as though

Answer 1

C

试题分析：连词辨析。A直到…才；B除非;如果…不；C即使；D似乎；好像；句意：在你们班里，你应该让所有的学生都发表他们的观点，即使他们的观点和你的观点不一样。故C正确。
点评：连词的辨析要根据上下文的语境，本题的BCD项都是常考的连词。