()4.Therocketismainlymademetal.A.ofB.fromC.intoD.by

Question

(   ) 4. The rocket is mainly made      metal.

A. of    B. from

C. into    D. by

Answer 1

4. A be made of ...由…"-制成（常指可看出原材料)；be made from ...由……制成（常指看不出原材料）