問題詳情
Man’s knowledge of metals has been a very important (36) to mastering his environment. Very earlyin history, man learned how to make use of (37) metals such as gold and silver, but they are(38) be madeinto tools. The first important metal used (39) tools and weapons was bronze, a (40) of copper and tin.
【題組】36.
(A) helping
(B) aid
(C) use
(D) style
參考答案