According to the requirements of the syllabus, the vocabulary of CET-4 is 4200, and that of CET-6 is 5500. Vocabulary will not only affect the reading and writing speed of Band 4, but also affect the listening effect.

American linguist Diller's research shows that if we know 25 words, on average, we know 23% words per page. If we know the word 135, the percentage will reach 50%. 2500 words is equivalent to 78%, 5000 words is equivalent to 86%, and 10000 words is equivalent to 92%.

Therefore, the more words students master, the more they can understand in reading comprehension, and the greater the correct rate.

Extended data:

The role of college English test;

1, CET-6 has aroused the attention of Chinese universities and relevant education departments to college English teaching and mobilized the enthusiasm of teachers and students.

2. College English Test provides an objective description of the English level of college students in China every year.

3. Because the CET-6 adopts the normal grading system, the results published after each exam contain a lot of information, which becomes the dynamic basis for the decision-making of educational administrative departments at all levels, and also provides feedback information for schools to take measures to improve teaching quality according to their own school's actual situation.

4. CET-6 has formed a complete system from proposition, examination, examination organization, statistical analysis to result release. This is a large-scale exam carefully organized in strict accordance with the quality requirements of standardized exams.

College English test has been recognized by the society and has become one of the standards for recruiting college graduates by personnel departments at all levels, which has produced certain social benefits.

References:

Baidu encyclopedia-CET-6