The box is made of _________. (金属)
A: metal
B: mend
C: steel
A: metal
B: mend
C: steel
举一反三
- The main bearing shells are made of steel with a lining of bearing metal which may be white metal， copper-lead or aluminum-tin alloy What is the meaning of “which” in the sentence above?（）
- Steel structure is the engineering structures made of shaped steel and steel plate.
- ______is the engineering structures made of shaped steel and steel plate.
- Steel is made ______ iron. A: on B: at C: from D: in
- The knife is made __________ metal and wood. A: to B: of C: from