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【单选题】
设有文法G(S)为:S→AB | AS A→aA | a B→b,则下面与该文法等价的正规式是( )A.
aa*bb*
B.
aa*b
C.
(ab)*
D.
a(ab)*b
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反馈参考答案：
举一反三
【单选题】. The post-Expo fate of foreign pavilions, especially those _____ tens of millions of dollars, has aroused strong interest among the public.
A.
cost
B.
costing
C.
having costed
D.
costed
【单选题】腐败是我们党面临的最大威胁，强化( )的震慑，扎牢( )的笼子，增强( )的自觉，通过不懈努力换来海晏河清、朗朗乾坤。
A.
不能腐 不敢腐 不想腐
B.
不敢腐 不能腐 不想腐
C.
不想腐 不能腐 不敢腐
【单选题】听力原文： 'Damage is expected to total into the tens of millions of dollars after several days of flooding in south central Alaska. But it's believed no one has been hurt.' Tim Wolston, of member station ...
A.
Southeast of Anchorage.
B.
South of Anchorage.
C.
Southwest of Anchorage.
D.
East of Anchorage.
【简答题】电脑故障维修基本原则:1.( );2.( );3.( )。
【单选题】听力原文： Business and public organizations spend tens of millions of dollars each year on development programs to improve their managers' interpersonal skills. You'd think, therefore, that there would be...
A.
Human relations.
B.
Personality.
C.
Interpersonal skills training.
D.
Interpersonal competence.
【简答题】瀹饮法,其主要程序主要包括(______________ )品饮三个程序。
【单选题】Manufacturers spend millions of dollars on advertising to entice people to buy their products.
A.
entertain
B.
encounter
C.
tempt
D.
force
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