一、三则评卷信息１．全国高考数学试卷１９９１年理工农医类中的第２４题是：根据函数单调性的定义，证明函数ｆ（ｘ）＝－ｘ３＋１在（－∞，＋∞）上是减函数．本题满分１０分．在文［１］的Ｐ．４７６参考答案和评分标准之后，有“注”写道：“只利用ｙ＝ｘ３在［０，... One or three ratings information The twenty-fourth item in the national college entrance examination mathematics paper in 1991 in the science, engineering, agriculture, and medicine category is: According to the definition of the monotonicity of functions, it is proved that the function f(x)=-x3+1 is a decreasing function on (-∞,+∞). This question is out of 10 points. In [1], P. After 476 referring to the answer and scoring criteria, there are “notes” that write: “Using y=x3 only at [0,...