J.Martin的战略化策略从几个方面考虑，下面( )是系统成败的关键。
A. 设计系统所用方法
B. 最高管理者的参与
C. 各部门之间的沟通
D. 数据库语言的确定
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People cannot dance without moving their feet.
A. Right
B. Wrong
C. Doesn't say.
When children pick up things, they are first interested in the ______.
A. color
B. shape
C. size
Who said that the film had begun twenty minutes before
A. The man.
B. Mrs. David.
C. Mr. David.
关于化脓性关节炎，哪项是错误的
A. 好发于髋关节
B. 大多可自愈
C. 可并发病理性脱位
D. 感染途径多为血源性
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