PowerPoint2000演示文稿文件以()为扩展名进行保存。
A..ppt
B..pot
C..xls
D..htm
参考答案:A
下列除哪项外,均可出现口臭
A.龋齿B.心火C.胃热D.宿食E.内痈
--- What did the teacher say to you just now?
--- She asked me _______________.
A.whether I had finished my work
B.if had I finished my work
C.that I had finished my work
D.how long had I finished my work