Test analysis: D object error. Relying on the horse can wait: metaphor is quick, and the article is written quickly; In the title, it means that calligraphers write calligraphy works quickly. In the title, the article is confused with calligraphy. A footsteps in an empty valley: hearing footsteps in a silent valley means that it is extremely difficult to get news and comments. The language "Zhuang Zhou Xu has no ghosts" "I am so happy when I hear people's footsteps." In the sentence, Professor Li's speech was at the provincial economic development forum, and it was direct and forward-looking, so it was extremely difficult to get news of his speech. If you watch the fire in hole B: it is as clear as watching the fire, and it is very clear to describe and observe things. C outer circle and inner side: it is a metaphor for being flexible and open-minded, and having a firm principle in mind. Judging from the law of the questions in the college entrance examination over the years, the key points of idiom testing are: 1. Misuse of emotional color; 2. Looking for meaning in words; 3. Wrong application object; 4. Idioms with double meanings; 5. Context or logic errors. In the process of preparing for the exam, we should pay attention to accumulating more, grasping the meaning of idioms as a whole, distinguishing between idioms with miraculous shapes, paying attention to the emotional color of idioms and paying attention to idioms with double meanings.