考博考试

【单选题】 In the last few minutes the conversation has become seemingly ______ as if the discussion were of some minor domestic matte r and not survival itself.
A．crucial
B．central
C．casual
D．causal

网考网参考答案：C
网考网解析：
句子后半部分提到谈话变得好像是拉家常(some minor domestic matter)，由此应当用casual“随便的”；crucial关键的；central中心的，主要的；causal原因的，因果的。 查看试题解析出处>>