Question

________ Simon has done well in his studies, he still works really hard.

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

Answer 1

【答案】：C
句意：虽然Simon学习很好，但是他仍然努力学习。
考查连词辨析。Since既然、自从……以来，引导原因状语从句和时间状语从句；If如果，引导条件状语从句；Although虽然，引导让步状语从句；Unless  除非，引导条件状语从句。根据Simon has done well in his studies,以及 he still works really hard.可知前后句之间存在一种相反的让步关系，所以用Although引导让步状语从句，故答案选C。