What are the three types of an abstract?
A、Anindicativeabstract,aninformativeabstractandanindicative-informativeabstract.;
B、Anindicativeabstract,adescriptiveabstract,andanindicative-informativeabstract.;
C、Anindicativeabstract,adescriptiveabstract,andaninformativeabstract.;
D、Noneoftheabove.
发布时间：2025-12-13 05:17:36
