单选题：Loop testing is a control structure testing technique where the

Loop testing is a control structure testing technique where the criteria used to design test cases is that they __. @[D](1)

A. rely basis path testing
B. exercise the logical conditions in a program module
C. select test paths based on the locations and uses of variables
D. focus on testing the validity of loop constructs




A.rely basis path testing
B.exercise the logical conditions in a program module
C.select test paths based on the locations and uses of variables
D.focus on testing the validity of loop constructs


答案：D