当代美国政治理论家罗伯特·达尔指出：“在民主国家，政治和官僚精英力量固然强大，远胜于

—Thanks for your help, but can you do me one favor, please?

—___________, sir. What's it then?[ ]

A. Just a minute      

B. My pleasure      

C. That's all right      

D. At your service  

Not only ____ interested in football but ____ beginning to show an interest in it. [ ]

A. the teacher himself is; all his students are

B. the teacher himself is; are all his students

C. is the teacher himself; are all his students

D. is the teacher himself; all his students are

红松、华山松、白皮松均具有此特点：（）。

A.叶鞘宿存

B.鳞叶下延

C.叶内有2条维管束

D.木材色浅

金属铝有以下（）特性。

A.质轻

B.耐腐蚀

C.无磁

D.可加工性

本病最应进行的实验室检查：

A．真菌镜检

B．毛囊虫

C．抗核抗体

D．血常规

E．血糖