GRE考试

【单选题】As Socrates was a man of much dignity, with an______face, it was______to say whether he felt inwardly glad that the end had finally come, or felt sad over the result, and was too manly to show it
A、obtuse… difficult
B、imperturbable … elementary
C、unassuming … intriguing
D、impassible … impossible
E、authoritative … challenging
网考网参考答案：D
网考网解析：
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