制作金属烤瓷桥金属支架蜡型叙述正确的是（）

A.0.5mm

B.1mm

C.2mm

D.2.5mm

E.3mm

U.S. President announced permission for oil drilling off the shorelines, ________ the country's effort to reduce energy import from foreign countries.

A．marked

B．marking

C．having marked

D．being marked