下面关于类概念的描述中（)是错误的。A．类是抽象数据类型的实现B．类是具有共同行为的若干对象的统

A．association

B．committee

C．community

D．faculty

A．economy

B．economics

C．economical

D．economic

A．economy

B．economics

C．economical

D．economic

A．He has more than one child.

B．His wife is a graduate student.

C．He is a full time student.

D．He works at the university housing office.

In 1880, Chekhov______.

A．became a full time writer

B．studied medicine in Moscow University

C．practiced medicine in his hometown

D．published his most memorable stories

A、They are the best companions to the old people who live alone.

B、They may help disabled people.

C、With pets, the home will be full of relaxing atmosphere.

D、Kids may grow as a responsible person with taking care of pets.

From this passage， we know that __________. 查看材料

A.there are many women full professors in the University of Texas

B.women play an important part in administrating the University

C.the weather on the campus is chilly

D.women make up a small percentage of the senior positions in the University

A) crew

B) rank

C) circle

D) staff