[单项选择]I heard Susan surprised her teacher by working hard. Yes,() A. her teacher worked hard. B. Susan worked hard. C. the teacher was surprising. D. Susan was surprised.
第23题: [单项选择]The ______ of the spring water attracts a lot of visitors from other parts of the country. A. clash B. clarify C. clarity D. clatter 参考答案:C 答案解析:clarity 清澈,clash (金属等的)刺耳的撞击声,clarify 澄清,阐明,clatter(硬物等落下或相撞时发出的)连续而清脆的撞击声。