【正确答案】:
JUDGING TWO PAIRS IN TERMS OF SUPERORDINATES AND SUBORDINATES, IT IS EASY TO SEE THAT SENTENCE [B] IS BETTER THAN SENTENCE [A] IN EACH PAIR, BECAUSE IN [B] THE WRITER USES SUBORDINATES, WHICH ARE CONCRETE AND PRECISE, PRESENTING A VIVID VERBAL PICTURE BEFORE THE READER WHEREAS IN [A] THE WORDS USED ARE SUPERORDINATES, WHICH CONVEY ONLY A GENERAL AND VAGUE IDEA. 
【题目解析】:就上义词和下义词而言,来判断两组句子。很容易看出每组中的句子[b]比句子[a]都好。因为在句子[b]中,作者使用的是具体而精确的下义词,在读者面前呈现出生动的言语画面,而在句子[a]中,所用的词是上义词,它只传达了一般的模糊的想法。