技术高度密集型行业一般属于（）型的行业类型。
A.完全竞争
B.不完全竞争
C.寡头垄断
D.完全垄断
参考答案：D
下列哪项不是疖病的临床特点（）
A．好发于项后发际部、臀部
B．好发于夏、秋季节
C．好发于消渴患者
D．可发生于身体各处
E．此愈彼起，日久不愈，反复发作
He was regarded as such a _____ student that all of the teachers believed that his future
would be bright. [ ]
A. bad
B. stupid
C. poor
D. gifted
