题目选项分析

Officials at the United States Mint believe that the Sacagawea dollar coin will be used as a substitute for four quarters more than for the dollar bill because it weighs only 8.1 grams, far less thanfour quarters, which weigh 5.67 grams each.

Officials at the United States Mint believe that the Sacagawea dollar coin will be used as a substitute for four quarters more than the dollar bill because its weight of only 8.1 grams is far lighter than it is forfour quarters, which weigh 5.67 grams each.