I. Circle the word of which the underlined sound is pronounced differently from the others.

 1.           a. ago                     b. flat                     c. man                              d. happy

 2.           a. wash                   b. late                     c. want                   d. quality

 3.           a. button                 b. cup                     c. pulp                              d. put

 4.           a. sunbathe             b. product               c. fun                      d. include

1+1= N

Hoàn thành các phương trình hoá học sau (Ghi rõ điều kiện nếu có):

1. CaO  + H₂O   ---->

2. KClO₃    ---->

3. K   +    O₂  ---->

4. C     +    O₂  ---->

5. SO₂    +    H₂O   ---->    

6. Na₂O    +   H₂O   ---->

7. Zn     +    HCl   ---->

8. BaO + H₂O   ---->

9. Ca + H₂O  ---->

10. SO₃   + H₂ O ---->

11. P₂ O₅     + H₂ O ---->

12. Mg + HCl  ---->