东莨菪碱的作用特点是( )。A．兴奋中枢，增加腺体分泌 B．兴奋中枢，减少腺体分泌

----Wang Ming, will you take part in the coming National English proficiency contest?

----         We should catch the precious chance .[ ]

A. Out of the question!    

B. That’s for sure.    

C. For what?        

D. Why bother?

When it was his turn to speak, ________ ,  he stood up.   [ ]

A. nervously and excited  

B. nervous and excitedly 

C. nervously and excitedly  

D. nervous and excited

葛根黄芩黄连汤的主治病证是（）

A.协热下利

B.热毒血痢

C.湿热痢疾

D.虚寒血痢

E.热结旁流

短路过渡适合于（）或需低热输人的情况下的焊接。

A.薄板

B.厚板

C.中厚板