第3题: [单项选择]One of the benefits of the new model is that it is easier ______ than the old one. A. operating B. to be operated C. to operate D. operated 参考答案:C 答案解析:在有些be+adj.+不定式的情况下,动词不定式的主动形式表示被动;这些形容词一般为easy,hard,difficult,important,interesting,heavy,pleasant,