一下为部分题目：
2. The String.Format(“Input = {0} and Output = {1}”, “1”,”2”) expression returns which of the following text:
3. How can a string variable called myString be converted to an all-capitals representation for future use?
4. Which activity can be used to loop through each row from a DataTable?
5. What key combination allows you to automatically create a variable from an activity’s property field?
6. Which activity can be used to modify the value of an existing cell in a DataTable?
