Do you think he will pass the exam if he _____ hard? [ ]

A. working

B. will work

C. works

D. worked

在学生表STUD中，查询年龄在20～23岁之间的学生的姓名(XM)、年龄(SA)和所在系(SD)。实现该功能的正确SQL语句是______。

A．SELECT XM,SA,SD FROM STUD WHERE BETWEEN 20＜SA＜23

B．SELECT XM,SA,SD FROM STUD WHERE SA BETWEEN 23 AND 20

C．SELECT XM,SA,SD FROM STUD WHERE SA NOT BETWEEN 20 AND 23

D．SELECT XM,SA,SD FROM STUD WHERE SA BETWEEN 20 AND 23