下列各项中,对证券公开发行的叙述错误的是()。
A. 向不特定对象发行证券,属于公开发行
B. 向累计超过200人的特定对象发行证券,属于公开发行
C. 非公开发行证券,可以采用广告方式
D. 未经依法核准,任何单位和个人不得公开发行证券
The author's major conclusion about the function of mistakes in foreign language learning
A. mistakes are not important in the process of learning a language
B. learners are often very afraid of making mistakes
C. native speakers often do not tell foreign language learners about their mistake
D. making mistakes can help the learner discover the rules of the language
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