【正确答案】：
ANTONYMS ARE USEFUL IN ENABLING US TO EXPRESS ECONOMICALLY THE OPPOSITE OF A PARTICULAR THOUGHT, OFTEN FOR THE SAKE OF CONTRAST. MANY IDIOMS ARE FORMED WITH ANTONYMS, FOR EXAMPLE, THICK AND THIN.
ANTONYMS ARE OFTEN USED TO FORM ANTITHESIS TO ACHIEVE EMPHASIS BY PUTTING CONTRASTING IDEAS TOGETHER, FOR EXAMPLE, THE PROVERB MORE HASTE, LESS SPEED.
【题目解析】：本题考查反义词的实际用途。反义词在帮助我们简练地表达某一特定思想的对立面时十分有用，这经常是因为对比的需要。很多习语是由反义词形成的。比如：thick and thin（甘苦）。反义词常通过将对立的思想拼合在一起来形成对偶起到强调的作用。比如谚语：More haste, less speed.（欲速则不达）。