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Mathematics Difficulty of College Entrance Examination in Shanghai over the Years
Difficult people are not difficult, and difficult people are difficult.

Give a specific value, according to the teaching and research section, (mark the expected average score when the difficulty coefficient is full score 100).

The overall difficulty of science comprehensive test questions has also been greatly improved this year (in 2000, 200 1 year, 2002, and 2003, the overall difficulty was 0.66, 0.67, 0.63, and 0.55, respectively), among which the difficulty of biology test questions was obviously greater than that of last year, which was close to physical chemistry. This will change the attitude of middle school students towards these three subjects in the future. It used to be thought that you can get a higher score than physical chemistry by spending less time memorizing relevant materials. 200 1, and the physical, chemical and biological difficulty coefficients are 0.49, 0.47 and 0.74 respectively. In 2002, the difficulty coefficients were 0.49, 0.73 and 0.76 respectively, which is different this year (the difficulty of biology test was reduced to 0.52, which is consistent with physics, but slightly higher in chemistry). Obviously, in the future, if middle schools don't pay as much attention to biology as physics and chemistry subjects, it will affect the overall improvement of candidates' comprehensive science subjects.