第14题: [单项选择]How does the man feel about his grade A. It was an improvement. B. It was disappointing. C. It was unfair. D. It was satisfying. 参考答案:B 答案解析:[听力原文] W: You look exhausted this morning, Steve. M: I am pretty tired. I stayed up nearly all
第15题: [单项选择]（）属于原始凭证。 A. 收款记账凭证 B. 付款通知单 C. 试算平衡 D. 科目汇总表 参考答案:B
第25题: [单项选择]工程网络计划费用优化的目的是为了寻求( )。 A. 资源有限条件下的最短工期安排 B. 资源使用的合理安排 C. 满足要求工期的计划安排 D. 工程总成本最低时的工期安排 参考答案:D 答案解析:[解析] 根据费用优化的方式得知其目的是寻找最低费用情况的工期或最大限度缩短工期，使费用增加最少及最短工期时的最低费用；增加费用一定，缩短工期最长。
第30题: [单项选择]Which of the following conclusions is best supported by the second paragraph A. Robot does not last long. B. The early men made toys themselves. C. Man has always had a desire to make a copy of himself. D. The materials for making a copy of man are limited. 参考答案:C 答案解析:[试题分析] 归纳总结题。
[详细解答] 根据第二段中的一句话But humans have been dreaming of real and imaginary copies of themse
