EXERCISE 3. MARK THE LETTER A, B, C, OR D TO INDICATE THE WORD(S) CLOS...

Question

20. Deforestation is one of the biggest environmental threats to the ecologicalbalance in the world. A. sureties B. certainties C. dangers D. safety

Accepted Answer

A. PHẦN TRẮC NGHIỆM 1. A 11. D 21. B 31. D 41. B 51. C 61. A 71. D 81. B 2. C 12. C 22. A 32. D 42. C 52. D 62. B 72. B 82. C 3. D 13. B 23. B 33. C 43. D 53. C 63. C 73. C 83. C 4. B 14. A 24. C 34.....

EXERCISE 3. MARK THE LETTER A, B, C, OR D TO INDICATE THE WORD(S) CLOS...

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