Peter and Bill are brothers. Peter is twelve and Bill is ten. They live with their parents and their dogs in a small town in the south of England. They do not look like each other. Peter is tall and dark and Bill is short and fair. They also like difference things. Peter likes sports but he is not interested in school. He hates Mathematics and History and he never remembers the numbers. Bill like goes to the school very much. He is quiet good at learn English, he reads and writes a lot. Bill can draw very well, too. But he never plays sports. He spends most of his time indoors reading or drawing. He wants to be a writer or artist
Mình tìm được từng này lỗi sai

Cho các chất sau: etyl axetat, tripanmitin, saccarozơ, etylamin, Gly-Ala. Số chất tham gia phản ứng với dung dịch NaOH khi đun nóng là:

A. 2.

B. 3.

C. 5.

D. 4.