问题
选择题
When he is faced with a dilemma sometimes, he usually makes a/an ________ decision by throwing a coin.
A．arbitrary
B．conservative
C．accurate
D．cautious
答案
答案：A
题目分析：进退两难的时候，靠抛硬币作出的决定是“随意”的。conservative: 保守的；accurate: 精确的；cautious: 谨慎的。不合题意。arbitrary: 随意的、随机的。故A项正确。