单项选择题
A.use a defaule formula of 1
B.use @elements and add 1 to the total
C.use the @count function instead of @elements
D.use @texttotime to ensure that all strings arte converted to date-time values
单项选择题 whenrobertcreatedaresponseform.hesetthe"formulasinheritvaluesfromselecteddocument"optionontheformproperties,thefieldnameonthereviewformisthesameasthefieldnameontheinheritingform,howevertheformdoesnotinheritanydata,why?（）
单项选择题 whichoneofthefollowingisan@fuctionthatLonniecanusetoreturnthevaluefromaspecificfield?（）
单项选择题 whichoneofthefollowingshouldcathyusetosortalist?（）