Centroid education question bank has been downloaded. Look at the downloaded address first, and then open it according to the address. Click Open to open the centroid education question bank.

Centroid education is a website dedicated to providing learning resources, policy information and other contents for high school subject competitions and independent enrollment. Provide high-quality college self-enrollment related subject competitions and online courses, and provide high-quality short videos of knowledge points and subject competitions to students all over the country for free.