... C; 10 D; 11 C; 12 A; 13 B; 14 B; 15 C; 16 D; 17 D; 18 C; 19 B; 20 B; 21 B; 22 C; 23 A; 24 C; 25 D; 26 A; 27 B; 28 D; 29 D; 30 D; 31 B; 32 C; 33 C; 34 A; 35 C; 36 A; 37 B; 38 A; 39 A; 40 B; 41 ... Hanhtrangvaodaihoc.com B PARAGRAPH WITING: Write a paragraph (14 0 words) on the following topic: “Why you learn English?” Hanhtrangvaodaihoc.com ANSWER KEYS Mã đề: 13 5 SECTION A (8 POINTS) 01 ... air pollutant under certain conditions Many of the more important air pollutants, such as sulfur oxides, carbon monoxide, and nitrogen oxides, are found in nature As the Earth developed, the concentration...