The two most difficult test papers in the history of the mathematics college entrance examination. Do you dare to challenge the difficulty level that makes you want to cry when you see the test papers?
Applicable to the first year of high school this year: the proportion of chemistry in the elective exam has been increased, giving you a comprehensive understanding of the chemistry subject
Qinghai launches comprehensive reform of college entrance examination: breaking down the division of arts and sciences and implementing the "3+1+2" examination model
Copper prices fell to the lowest level since February last year. There may be a short-term correction, but it is difficult to suppress the downward trend.
Copper foil prices have increased by as much as 30% throughout the year, but demand still exceeds supply. Lithium battery and PCB factories are in a hurry