I recommend a book, College German Vocabulary Band 4, published by Shanghai Foreign Language Teaching and Research Press.

Introduction to CET-4;

At present, CET-4 is the only German proficiency test in Chinese universities. It is held once a year at the end of June, on the same day as other languages. There is only a written test, and there is no oral test at present. The difficulty of the exam is equivalent to the level 4 stipulated in the college German syllabus. There are no rules for candidates' German class hours. Generally, anyone with more than 250 class hours can try. The vocabulary requirement is about 2,200. Candidates are required to master the basic knowledge of German grammar, the knowledge of German national conditions, and have a certain ability to express and use German language. The CET-4 is divided into the following parts: 1. Listening Comprehension Listening Comprehension mainly tests the ability of candidates to obtain oral information and quickly understand listening content. *** 15 is divided into two sections. Part a has the question 10. Listen to a short dialogue (usually two sentences, a dialogue between men and women) for each question. ), ask questions after the end; B. Listen to two short paragraphs, and ask 2-3 questions and ***5 small questions after each paragraph. Listen to the dialogue, passage and question twice. The recording speed is 100 words per minute. This part of the topic is not difficult. Generally speaking, as long as you are familiar with the basic national conditions and daily university life in Germany and have a certain German language ability, you can easily answer questions. 2. Reading comprehension The reading comprehension part is also divided into two sections. In paragraph A, read several short articles with a total number of words below 600 words, and put forward ***20 multiple-choice questions after reading the articles; Paragraph B is a cloze, and the word 150 is used to fill the space 15, and the question type is multiple choice. The selection of these articles is generally related to Germany's basic national conditions, daily life and university life. Language is not difficult to understand. Reading comprehension is the difficulty of CET-4, especially the cloze part. And reading accounts for the most points (45 points). Therefore, we must pay attention to it. 3. Grammar and Vocabulary Grammar and vocabulary are also divided into two sections, namely, multiple-choice questions (30 questions) and word fill-in-the-blank questions (20 questions, that is, filling a word indiscriminately in a sentence). The proportion of grammar and vocabulary is 70% and 30% respectively. This is a difficult point in CET-4, because most candidates have poor basic grammar and a small vocabulary. This part mainly investigates the basic grammar knowledge of German, as well as its deformation and transformation. As long as you can master the basic grammar of German, master the basic deformation and usage of commonly used German verbs and nouns. You can answer questions fluently. This part of the composition requires writing an 80-90-word German essay within 30 minutes, and the topic is generally related to daily life. According to the examination situation over the years, we mainly examine simple expressions such as "my ..." (teacher, classmate, room, family, hobbies, etc. Candidates can easily complete this part after targeted training. Time of CET-4 test: 120 minutes. Distribution of test scores: listening 15, reading 45, grammar vocabulary 25, composition15 * * score 100. References: CET-4 test guide, CET-4 simulated test questions, CET-4 China Learning Alliance published by Tongji University.