39．In the dead man's bedroom the police found several important ____ whichpointed to Blake as the murderer.
A．careers B．clues C．challenges D．dreams

答案与解析：
选B (clues)。本题考查名词辨析。句意：在死者的卧室里，警察找到了一些重要的线索，这些线索表明布莱克就是凶手。由上下文可知，clues“线索”为最佳答案。careers职业，challenges挑战，dreams梦想，均不符合句意。