前翅为鞘翅，咀嚼式口器，完全变态的昆虫是（）。
A、金龟子
B、蝉
C、蝼蛄
D、螳螂
参考答案：A
最早创立科举制度的朝代是 [ ]
A．东汉
B．隋朝
C．唐朝
D．北宋
—Can I go down this street?
—No. You'd better(最好) go along Bridge Street. The street is too _______ now. [ ]
A. small
B. busy
C. dirty
D. old
