Hg hóa trị II

1Who went to the cinema with you?

2How long have you stayed in New Zealand?

3why did she call the firemen?

4how many kilos of oranges do you buy?

5who does John write about?

6when did you watch a very good film on TV?

7who did she make coffee for?

8who did Susan give the money to?

9how did you go to school?

10why was you tired yesterday evening?

ta có

ab//hk mà góc h=k

=>abkh là hình thang cân

mà góc h = 90 độ

=>abkh là hình chữ nhật

hành khách đứng yên so với toa tàu

bn phóng to ra đc ko?

bn phóng to ra đc ko?

đơn chất:K,Zn,Br₂

hợp chất là còn lại nha