河南省驻马店市2022~2023学年度高一第二学期期终考试英语试卷试卷答案答案正在持续更新，目前趣对答案为大家整理了相关试题及答案，供大家查缺补漏，高效提升成绩。

21.What can we know about floating-point representation? A.It's widely used by digital devices. B.It causes calculating errors frequently. C.It pulses thousands of times a second. D.It makes characters readable for humans. 22.In which process does a stopwatch rounding error usually happen? A.When recording the oscillations of a quartz crystal. B.When counting the times of oscillations of a quartz crys- tal, C.When transforming the final count into a floating-point representation. D.When displaying the floating-point representation number