Is the third grade English in Zhejiang primary school American pronunciation or British pronunciation?

I am teaching pep, and I feel that most of them are British, because the Canadian language is mainly British, but some of them are American. For example, the word tomato has two different pronunciations, English and American. Oh, by the way, the teacher of ABC Horizon English Center, where I am currently studying, told me that it is easy to conquer English ... The key is the level of foreign teachers, and the standard accent (it is recommended to find foreign teachers in Europe and America) is the best way. Only by practicing one-on-one tutoring in oral English every day can we achieve better learning results ... After class, we should review the recording feedback repeatedly and integrate what we have learned! If no one really helps, you can only go to the listening room or Hujiang to get the after-school study materials. If you study with your ears, eyes, mouth and brain thinking, your English will improve rapidly, and the overall effect should be rapid and remarkable. The pronunciation of the word "that" in the recording is beautiful. I hope it helps you.