第3题: [单项选择]This sum of money played a vital role in the completion of the project, ______ it, the project would not have been completed so successfully. A. With B. Without C. Except for D. But that 参考答案:B 答案解析:本题为一个虚拟条件句,介词词组without it 中隐含了一个虚拟条件状语从句(if there had not been the money如果没有这笔资金的话),符合题意。A选项也可替代虚拟条件
第21题: [单项选择]下列字符中,其ASCII码值最大的是 A. NUL B. B C. g D. P 参考答案:D 答案解析:[解析] 在ASCII码中,有4组字符:一组是控制字符,如LF,CR等,其对应ASCII码值最小;第2组是数字0~9,第3组是大写字母A~Z,第4组是小写字母a~z。这4组对应的值逐渐变大。字符对应数