第20题: [单项选择]To our surprise, the stranger _____________ to be an old friend of my mother's. A. turned into B. turned out C. turned over D. turned up 参考答案:B 答案解析:令我们吃惊的是,这个陌生人竟是我母亲的一位老朋友。turn into意为“变成”;turn out“结果是,证明是;关掉;制造,生产;驱逐,(使)离开”;turn over“翻过来;仔细考虑;移交”;