You won’t discover the truth you look into the matter yourself.A. unlessB. whileC. althou

问题补充：

You won’t discover the truth you look into the matter yourself.

A. unless

B. while

C. although

D. since

答案：

(答案→)A. unless

B. while

C. although

D. since

解析：考察连词辨析。A除非，如果…不…；B当…时；然而；C尽管；D自从；句意：如果你不亲身去调查事实，你就不会发现真相。故A正确。