为保证系统的并发性和性能，Sybase公司的企业级服务器ASE支持哪几种锁机制Ⅰ．数据页锁 Ⅱ．数据行锁 Ⅲ．所有页锁

A．仅Ⅰ和Ⅱ

B．仅Ⅰ和Ⅲ

C．仅Ⅱ和Ⅲ

D．都支持

—Tom wants to be another Obama after he graduates from school.

—That sounds great, but how can he ____ a person like him if he goes on like this?[ ]

A. change

B. turn

C. get

D. make