问题
选择题
Clothing made of man-made fibers has certain advantages over _______ made of natural fibers like cotton, wool or silk.
A．the ones
B．one
C．that
D．what
答案
答案：C
that代指不可数名词Clothing，the ones与 one代指可数名词。人造纤维制成的衣服比用天然纤维像棉、羊毛、蚕丝制成的衣服具有一定的优势。选Ｃ