Anhui 20 17 college entrance examination science paper is the most difficult. According to the inquiry of Anhui Education Bureau, due to the difficulty of college entrance examination, only 7 147 students in Anhui Province scored above 600 in science in 2065, and 44 162 students scored above 600 in science in 2020. It is of little significance to admit college entrance examination scores according to ranking every year, but the difficulty of college entrance examination questions determines the test scores of candidates, and the difficult questions have low scores. In 2020, there will be more people who can easily get 600 points or more. Therefore, Anhui 20 17 college entrance examination science paper is the most difficult. The college entrance examination is a selective examination in People's Republic of China (PRC), excluding qualified high school graduates from Hong Kong Special Administrative Region, Macao Special Administrative Region and Taiwan Province Province or candidates with equivalent academic qualifications.