2.5x=1的解是______．
2.5x=1，
2.5x÷2.5=1÷2.5，
x=0.4；
所以，x=0.4就是2.5x=1的解．
故答案为：x=0.4．
He is difficult ________.
A．to get along
B．to be got along with
C．to get along with
D．of getting along with
Word菜单栏中"编辑"菜单下的"复制"项相当于DOS系统下的COPY命令。
