当比较的两组数据内部构成不同时,可作()。
A.直接法标化
B.间接法标化
C.根据具体情况,选择直接法或间接法标化
D.两组不可比较
E.以上都不对
参考答案:C
When _______ there, the postman found the door locked and then stopped _______ the letter in the mailbox on the wall.
A.reaching; putting
B.reached; to put
C.reaching; to put
D.reached; putting
115比一个数的2倍少25,这个数是多少?