根据发生的部位喉癌可分为_______、_______、_______和_______,其中以_______型最常见。
参考答案:声门上型、声门型、声门下型、声门旁型、声门型
---Little Tom could hardly pass the exam, _________?
---_______. Although he was ill the day before the exam.
A.couldn’t Tom; Yes, he could
B.could he; Yes, he could
C.could he; No, he couldn’t
D.couldn’t he; No, he couldn’t
SQL语句可以进行多个查询的嵌套,但Visual FoxPro中只支持( )层嵌套。
A.1
B.2
C.3
D.无穷