Cặp chất nào sau đây không phản ứng với nhau?
A. HNO3 + Cu(OH)2.
B. MgCl2 + Na2SO4.
C. KI + AgNO3.
D. HClO + KOH.
STRESS
Unit 1
1. A. number B. object C. common D.believe
2. A. constant B. rumour C. attract D.capable
3. A. interest B. uncertain C. readily D.sympathy
4. A. insist B. remain C. loyal D.admire
5. A. studious B. pleasure C. sorrow D.sincere
6. A. hospitable B. confidence C. favourite D.mathematics
7. A. successful B. influence C. attraction D. apartment
8. A. constancy B. quality C. suspicion D.changeable
Unit 2
9. A. happen B. decide C. excite D.affect
10. A. destroy B. involve C. realize D.complain
11. A. replace B. surround C. escape D.carry
12. A. promise B. invite C. arrive D.protect
13. A. forget B. rescue C. reply D.contain
14. A. imitate B. imagine C. difference D.terrify
15. A. confidence B. appreciate C. memorable D.specially
16. A. cottage B. forest C. marriage D.agree
Unit 3
17. A.silver B. party C. candle D.intend
18. A. classmate B. library C. motorbike D.informal
19. A. decorate B. activity C. restaurant D.gathering
20. A. expensive B. recently C. colourful D.organize
21. A. entertain B. financial C. appreciate D.concerned
22. A. passenger B. comfortable C. included D.document
A. refuse B. demand C. mention D.divide