题目内容

连通图的生成树包含了图中的所有顶点。

A. 对
B. 错

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Task 1 Word SelectionFill in the blanks with words given below. Change the form where necessary.1. Sheisreluctanttodiscussthe_______oftheplay.2. _numerousfailures,theycontinuedtoconducttheexperiment.3. Themain_ofthemerchantbanksistoraisecapitalforindustry.4. Ihopeinyearstocomehewill_onhisdecision5. The temperature of this city _ from 0℃ to 30℃..6. You will be informed of the details at the _ time.7. Thenovelpresentsone_ofthereforminthecountryside.8. Whenweinvestinlearningand_,weinvestinhumandignity,developmentandpeace.9. We will resolutely our internationalist duty no matter whathappens.10. Thechildisvery_______andevenhisfathercannotmanagehim.

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Task 3 Word FormationComplete each of the following sentences with the proper form of the word given in brackets.1. The_____forthecourseinvolveswrittenassignmentsandpracticaltests.(assess)2. Contrarytogeneral_,heannouncedthatallfourhadgiventheirapproval. (expect)3. Responsibility,dialogue,actionandreportingarethekeyelementsina_circlethroughwhicheveryonebenefits. (virtue)4. Ideasaboutthesocialsignificanceof__havechangedovertime.(religious)5. Thenew-mediaindustryattractsyoungand_people. (create)6. Theybumpedhimoffbecauseheknewtoomuchabouttheir_activities. (legal)7. TheFestivalOfAsianArts&Musicwillincludetwodaysoflive_.(perform)8. Oneofthedrivingforcesbehindthisrecent_isthegrowthofservices.(expand)9. Akeyissueforhighereducationinthe1990'sistheneedforgreaterofcourses (diverse)10. His_______wasbecomingincreasinglyirrational.(behave)

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执行DROP USER语句删除用户，需要拥有的权限是

A. DROP USER权限
B. DROP TABLE权限
CREATE USER权限
DELETE权限

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下面使用DELETE语句删除用户user2的语句中，正确的是

A. DELETE FROM mysql.user WHERE Host='localhost' AND User='user2';
B. DELETE FROM mysql.user WHILE Host='localhost' AND User='user2';
C. DELETE FROM mysql.user WHERE Host='localhost' OR User='user2';
DELETE FROM mysql.user WHILE Host='localhost' OR User='user2';

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连通图的生成树包含了图中的所有顶点。

A. 对 B. 错

执行DROP USER语句删除用户，需要拥有的权限是

下面使用DELETE语句删除用户user2的语句中，正确的是

A. 对
B. 错