Test analysis: To understand idioms, we should not only know their meaning, but also understand their emotional color. Idiom, there is a problem of using objects, so we must pay attention to the context of the sentence and use the objects. Using the method of negative selection and exclusion, the "rock breaking" in sentence B refers to an unexpected wonderland, while Dobby refers to the novelty of the article and does not describe the game. The phrase "shocking" in sentence C means frightening and derogatory, and the phrase "disapproving" in sentence D means not thinking it is correct, disagreeing and misusing its meaning, so A is right.