第7题: [单项选择]Diesel engine mufflers accomplish noise reduction by () A. reducing exhaust gas velocity B. increasing the frequency of gas vibration C. the use of long head pipes D. the use of zinc electrodes 参考答案:A
第11题: [单项选择]Employers ______ their employees to be punctual. A. wish B. expect C. desire D. hope 参考答案:B 答案解析:本题为近义词辨析题。这四个词都可以表示“希望”。expect 表示一种强烈的愿望,并且认为是理应得到的,通常后面直接接宾语 expect sth 或在宾语之后再接不定式结构 expect sb to