无符号二进制整数101001转换成十进制整数等于______。
A．41 B．43 C．45 D．39
参考答案：A
用1、2、3、4、5这五个数组成一个数字不重复的五位数中抽到的数是15的倍数的概率是______．
— Let's go for a walk，shall we?
— It's too late now; _____，it's beginning to rain. [ ]
A. in addition
B. in a word
C. as a result
D. in general
