第5题: [单项选择]补码数(10000000)2算术右移一位和逻辑右移一位的结果分别是() A. (11000000)2和(01000000)2 B. (01000000)2和(11000000)2 C. (01000000)2和(01000000)2 D. (11000000)2和(11000000)2 参考答案:A
第32题: [填空题]A theory often involves an imaginary model that helps scientists picture the way an observed event could (produce) ______. 参考答案:be produced 答案解析:[解析] 本题考查动词的语态变化。在修饰the way的定语从句中,主语an observed event与谓语produce之间存在逻辑上的被动关系,需要使用produce的被动式:况且跟在情态动词