有字符串变量title = 'Company CEO' ，现在想将CEO改为CTO，也就是需要将字符串中的第10个字符改为T，则使用title[10] = 'T' 。程序运行后：

A . 正确 B . 错误

A . 花括号 B . 圆括号 C . 方括号 D . 尖括号

A . x\y，x>y B . exp，123，x*y C . char_1，student，No，a1234 D . end，1bcx

A . 正确 B . 错误

A、正确 B、 错误

A . End B . a1 C . xx D . Su

A、正确 B、 错误

A.对 B.错

A、c=a B、c='a' C、c= D、c='97'

A．To introduce the newest employees to everyone. B．To explain the company's new project. C．To have lunch with all employees. D．To have a great time with his family.

Mr. Teaschle is the former Chairman and CEO of Agave, Inc. who has served as Vice Chairman of SigmaAgave Corp. since the two energy companies merged in October 2001. In May 2002, he was named to the additional role of interim Chairman of Genertec Inc., to assist the energy merchant in restoring investor confidence and stabilizing the company's financial position. He is resigning from the positions he holds at Sigma Agave and Genertec to focus exclusively on his duties at Ventrus. On behalf of the Ventrus board, James J. Reilly, a director who led the nationwide search for a new CEO, said, "Hillman is a forceful, positive executive who is exactly the right person to lead Ventrus at this critical time. He knows how to guide major global companies through difficult transitions with a sharp focus on financial responsibility. He is an extremely hardworking, hands-on executive who knows how to engage employees. He believes that a company is as good as the ambitions its stakeholders share, and he will push firmly but fairly to achieve the company's goals. He has the reputation and credibility needed to lead Ventrus to economic recovery and a great future." Ventrus Airlines operates more than 1,900 flights a day on a route network that spans the globe. Date: Thursday, Feb. 19 To: Mr. Teasdale From Ms. Teasdale Message: Ms. Teasdale saw the news and called to congratulate again. She said she had persuaded your parents to cone for the celebration party. She asked if you needed to see the guest list Please call back. What is the possible title of the news？ A．Hillman F. Teasdale Saved Ventrus Airlines B．Hillman F. Teasdaie, CEO of Three Giant Companies C．Ventrus Announces New CEO Appointment D．Board Decision for Dramatic Strategic Change

是 否

A．scanf（"c=%c,d=%d",&c,&d）; B．scanf（"c=í=%d",&c,&d）; C．scanf（"c=%d,d=%d",&c,&d）; D．scanf（"c=Y=%d",&c,&d）;

A．12 k 34 B．12’k’34 C．12k34 D．12 ’k’ 34