单选题 We were unable to reach a decision because we felt that the speaker had been ______ and had avoided answering many of our questions.

【正确答案】 A

【答案解析】(noncommital不明朗的)。句意为：我们不能作出决定，因为我们觉得发言人态度不明朗，避免回答我们的许多问题。B．practical实际的；C．contentious好争论的；D． unprepared毫无准备的。