試題詳解

8 According to the passage, what problem led to the development of new dyes after 1900 ?
(A) Previously developed dyes did not work on new types of fibers.
(B) Dyes derived from petroleum caused damage to new synthetic fibers.
(C) New synthetic fibers required brighter colors tijan natural fibers did.
(D) New fabrics easily lost their colors when washed.