测试程序时,不可能遍历所有可能的输入数据,而只能是选择一个子集进行测试,那么最好的选择方法是
B
暂无解析
ThelongestriverinCanadais________.
Thetwogirlscompetedwitheachother______thehighestmark.
Howmanyformscanarticlesberoughlydividedinto?whatarethey?
Fishis________andexpensiveatthistimeoftheyearinthisarea.
改写病句:Peterorderedthemealforhisfriendsrangingfromfriedshrimptochoppedbeef.