Paste is not the same as cake. There is something wrong with this topic, it should be paste, not paste; The reason is that there is something wrong with Lesson 54 in Book 2 of the New Concept, which mentions that pasty is sticky. The translator made a mistake in translation. If you don't look up the dictionary carefully, everyone will make the same mistake. You can consult Longman Dictionary and other dictionaries, and you will find that the new concept has indeed been translated wrong here.