第26题: [单项选择]The salesman approached the house cautiously when he saw the vicious dog at the door. A. carefully B. deliberately C. nervously D. bravely 参考答案:A 答案解析:[解析] 各项的意思是:carefully仔细地,小心地;deliberately故意地;nervously紧张地,不安地;bravely勇敢地,无畏地。划线单词cautiously的意思是:小心地,