在Word编辑状态下,可以通过双击状态栏上的“改写”按钮将系统当前的“插入”状态换为“改写”状态。 ( )
参考答案:对
My brother has been preparing carefully for the English exam, so that he can be sure of passing it at his
first _____. [ ]
A. request
B. attempt
C. promise
D. purpose
小民同学家里种了一盆花,长势不好。他怀疑花土的酸碱度不适宜花的生长,于是他向老师要了pH试纸和标准比色卡,请你告诉他如何测定该土壤的pH。