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    【题目】市场上有加酶洗衣粉，即在洗衣粉中加入了少量的碱性蛋白酶，它的催化活性很强，衣物上的汗血渍及人体排放的蛋白质油渍遇到它，皆能水解而除，下列衣料中不能用加酶洗衣粉洗涤的是（ ）

    ①棉织品

    ②毛织品

    ③腈纶织品

    ④蚕丝织品

    ⑤涤纶织品

    ⑥锦纶织品

    A．①②③ B．③④⑤ C．③⑤⑥ D．②④

    【答案】D

    【解析】加酶洗衣粉含有生物催化剂酶，可以催化蛋白质的分解反应。棉花织品中主要成分是纤维素，可以用加酶洗衣粉洗，①不符合题意。羊毛织品中羊毛的主要成分是蛋白质，不能用加酶洗衣粉洗，②符合题意。腈纶织品的主要成分是合成纤维，可用加酶洗衣粉洗，③不符合题意。蚕丝织品中主要成分是蛋白质，不能用加酶洗衣粉洗，④符合题意。涤纶织品属于化学纤维中的合成纤维织造而成的，可用加酶洗衣粉洗，⑤不符合题意。锦纶织品属于合成纤维，可用加酶洗衣粉洗，⑥不符合题意。

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