The full name of ACT exam is "American College Entrance Examination", which means "American College Entrance Examination". It is one of the requirements for undergraduate admission in the United States and one of the important bases for awarding scholarships. It is sponsored by ACTINC. ACT is the only college entrance examination in the United States that includes science subjects. ACT test consists of five parts: English, mathematics, reading, science and composition (optional test); The English test is mainly to measure everyone's ability to understand and analyze written English. Mathematics examination is mainly to measure the quantitative reasoning ability of candidates; Reading test mainly measures everyone's ability of understanding, analysis, evaluative reasoning and problem solving. Reading test covers natural science, social science, humanities and even literature and art; Scientific reasoning test mainly measures people's ability to deal with scientific concepts by using charts, tables and research summaries. In addition, there is an optional 30-minute English writing test to test students' English writing ability.