近似数1.25与1.250表示的精确度相同．______．

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问题解答题

答案

.250表示精确到千分之一，1.25表示精确到百分之一．所以精确度不同；

故答案为：错误．

选择题

To save class time, our teacher has ____ students do half of the exercises in class and complete____ for homework.

A．we; the other half

B．our; other half

C．us; the other half

D．us; others

判断题

UNIX的环境下，pwd显示当前工作目录。