Which of the following statements are formal quotations? ( ) A: 'It takes me three weeks to prepare a good impromptu speech.' by Mark Twain . B: Bertrand Russell said, 'It's preoccupation of possession that keeps you from happiness'. C: My mum always said 'respect the old men'. D: 'Make American great again' by Donald Trump.

在SETEXACTON情况下，结果值为逻辑真的表达式是（）。 A: ''数据库系统''=''数据库'' B: ''数据库''=''数据库系统'' C: ''数据库''==''数据库''+space（4） D: ''数据库''=''数据库''+space（4）

I have warned you not to do that __________. A: over and over B: over and over again C: again and over D: again and again over

The word "revive" in paragraph 2 meant that A: make active again B: study again C: go over again D: find the value again

To deal with stress, you should ________________. A: sleep again and again B: play again and again C: put the work aside D: organize your schedule

智慧职教: 已知有字典dict1={'中国':'北京','美国':'华盛顿','俄罗斯':'莫斯科','日本':'东京'}，要输出'美国'所对应的值的正确语句为

下列不正确的转义字符是_______。 A: '' B: '074' C: '' ' D: ''''

I advised __________ ,but he turned me a deaf ear. A: him not to smoke again B: him to smoke not again C: him to not smoke again D: not him to smoke again

表示职称为副教授同时性别为男的表达式为（ ）。 A: IN ('副教授','男') B: 职称='副教授' AND 性别='男' C: 职称='副教授' OR 性别='男' D: BETWEEN '副教授' AND '男'

向student表插入一条新记录的正确SQL语句是（）。 A: APPENDINTOstudentVALUES('0401'，'王芳'，'女'，18) B: APPENDstudentVALUES('0401'，'王芳'，'女'，18) C: INSERTINTOstudentVALUES('0401'，'王芳'，'女'，18) D: INSERTstudentVALUES('0401'，'王芳'，'女'，18)