高考应用题的背景大多来源于现实生活,体现了学以致用的原则,为此我们将日常生活中的衣、食、住、行等问题略举几例,供大家赏析.例1用少量清水清洗衣物,如每次能洗去污垢的75%,则要使残留在衣服上的污垢不超过最初衣物上的污垢的1%,该衣服至少要清洗的次数为()(A)3.(B)4.(C)5.( The background of the college entrance examination application questions mostly comes from real life and embodies the principle of learning to apply. To this end, we will give a few examples of problems in daily life such as clothing, food, housing, and transportation, for everyone to appreciate. Example 1 with a small amount of clear water Wash clothing, such as each time you can wash away 75% of the dirt, then the dirt remaining on the clothing should not exceed 1% of the dirt on the initial clothing, the number of times the clothing should be cleaned at least () (A) 3. ( B) 4.(C)5.(