适用于结核病的短程疗法（）

A．头孢菌素 

B．头孢他定 

C．头孢拉定 

D．头孢吡肟 

E．头孢呋辛

Scientists are increasely _____ that the earth is getting hotter because of carbon dioxide and other gases.

A．content

B．conscious

C．convinced

D．common