The famous mathematician Zhang Yitang claims to solve the problem related to the "zero point conjecture". Peking University alumni confirmed that he heard his own statement.
The difficulty of the postgraduate entrance examination is divided into 6 ladders. Let’s see which ladder you are on. It is really important to choose the right ladder.
Make "the first cup of milk tea in autumn" for your juniors and students of Jiangsu food majoring in 2 days to prepare 550 cups of milk tea to welcome the new year
In 1996, female college students encountered repeated walls in interviews and began to doubt themselves. How difficult is it for a college student with "three no"?