The earliest prototype of CET-4 and CET-6 is the widely popular English proficiency test in East China Petroleum Institute (now China Petroleum University). 1984 began to spread to the whole country. 1986 the first CET-4. 1987 was officially changed to 1 twice a year, and 1989 was increased by six levels. In 1990, the test paper types of CET-4 and CET-6 are determined as objective multiple-choice questions and subjective composition questions, which lays the foundation for the subsequent propositions of CET-4 and CET-6. 1999, CET-4 and CET-6 Oral Test. In 2006, the reform of CET-4 and CET-6 increased the proportion of listening. From June 5438+February, 2006, CET-4 and CET-6 are only open to college students, and social candidates are not allowed to take CET-4 and CET-6. In June 2007, CET-4 and CET-6 adopted the computer marking mode, which reduced the burden of marking. On June 5438+February, 2008, CET-4 and CET-6 tried the computer test mode for the first time. 20 12 CET-4 and CET-6 adopted the mode of multiple questions and multiple volumes, which effectively prevented candidates from cheating, "the same examination room, different papers". Cloze test will be cancelled in CET-4 and CET-6 from February 20 13. Translation is changed from single sentence translation to whole paragraph translation, and the score is improved. From April 38, 2065 to June 2006, the listening questions of CET-4 and CET-6 were partially adjusted. Band 4 listening: 1, cancel short dialogue 2, cancel short dictation 3, increase short news (paragraph 3) Band 6 listening: 1, cancel short dialogue 2, cancel short dictation 3, adjust listening text to 2 4, and increase lectures/speeches.