第11题: [单项选择]在SQL语言的SELECT语句中,用于对结果元组进行排序的是哪一个子句( )。 A. GROUP BY B. HAVING C. ORDER BY D. WHERE 参考答案:C 答案解析:GROUP BY是进行分组子句,HAVING给出的分组语句的附加条件,而WHERE子句是条件表达式。
第23题: [单项选择]What’s wrong with the man A. He has been throwing up. B. He has got a heavy toothache. C. He seems weak. 参考答案:B 答案解析:[听力原文]6-7 M: My tooth is aching badly, Doctor. Would you please have a look W: Yes. Open your