题目

How Much Can We Afford to Forget? In 2018, Science magazine asked some young scientists what schools should teach students. Most said students should spend less time memorizing facts and have more space for creative activities. As the Internet grows more powerful, students can access (获得) knowledge easily. Why should they be required to carry so much of it around in their heads? Civilizations（文明）develop through forgetting life skills that were once necessary. In the Agricultural（农业的）Age, a farmer could afford to forget hunting skills. When societies industrialized, （2009?十堰）ClO2是新一代饮用水的消毒剂，ClO2制取的微观过程如图：（其中表示氯原子，表示钠原子，○表示氧原子）根据右图获得的信息正确的是（　　）A．化学变化中分子可分，而原子不可分B．ClO2由三个原子构成C．NaClO2是氧化物D．此反应属化合反应