234 Answer key answer key chapter 1

Ex. 2

I. l.F, 2.C, З.Е, 4.А, 5.H, 6.G, 7.D, 8.B.

II. l.B, 2.D, 3.С, 4.А.

Ex. 6

I.E. 2.G, 3.F, 4.A, 5.B, 6.D, 7.C, 8.J, 9.H, 10.1.

Ex.7

1. the; 2.a; 3,_ ; 4.an, _ ; 5.the; 6._,_; 7._; 8.the; 9_,_; lO.the,

Ex. 8.

the, _, the, _, __, the, the, the, __, the, _, _, _, _, the, the, the, _, _, the, _.

Ex. 9

l._; 2. _, (the), the; 3. the, the, the, the; 4. _, the; 5. the; 6,_; 7_, (the); 8. the; 9. the, the, the.

Ex. 10

A. b; B. c; C. l.a, 2.b, 3.c.

Ex.11

1. productive; 2. to produce; 3. product; 4. production, productivity; 5. producers; 6. produce; 7. predict; 8. predictable; 9. to predict; 10. prediction; 11. science; 12. scientist; 13. scientific; 14. apply; 15. applications; 16. applied; 17. require; 18. required; 19. requirements; 20. curiosity; 21. curious; 22. imagine; 23. imagination; 24. imaginative; 25. development; 26. to develop.

Ex. 12

l.a; 2.b; 3.b; 4.c

Ex. 13

l.c; 2.b; 3 a; 4.c; 5.b; 6. с; 7.а; 8. с; 9.а; Ю.Ь; ll.b; 12.c; 13.a; 14.d; 15. b; 16. b; 17. b.

Chapter 2

Ex. 3

1. many; 2. is; 3. the number of, is increasing; 4, much; 5. is; 6. is; 7. many; 8. were; 9. is; 10. are; 11. was; 12. was; 13. are; 14. have; 15. has; 16. are; 17. is; 18. is.

Ex. 5

radii, crises, antennae (antennas), appendices, criteria, stimuli, encyclopedia, prognoses, sanatoria (sanatoriums), axes, aircraft, media, matrices, nebulae, phases, optima, syllabi (syllabuses), supernovae, syntheses, spectra, theses, equipment, maxima, hypotheses, equilibria, millennia, oases, curricula, phenomena, analyses.

Ex. 7

l.G, 2.E, 3.1, 4.C, 5.H, 6.N, 7.J, 8.L, 9.K, 10.D, ll.A, 12.F, 13.B, 14.M, 15.P, 16.O.

Answer key 235

Ex. 10

1. improvement; 2. improve; 3. improvement; 4. benefit; 5. beneficial; 6. to benefit; 7. technology; 8. technological ; 9. a technologist; 10. technology.

Ex. 11

l.d; 2.c; З.Ь; 4.d; 5.d.

Ex. 12

La; 2.d; 3.b; 4.d; 5.a; 6.c; 7.b; 8.d; 9.a; lO.b; ll.d; 12.a; 13.c; 14.a; 15.d; 16.d; 1?.b; 18.d; 19.b.

Chapter 3

Ex. 3

1.E, 2.C, 3.D; 4.A, 5.B

Ex. 5

1. understand; 2. sounds; 3. goes; 4. smells; 5.phones

Ex. 6

1. was studying; 2. was studying; 3. will be taking ; 4. will call; 5. was reading, was watching.

Ex. 7

1. bought; 2. has taken; 3. have read; 4. have translated; 5. haven't finished; 6. arrived; 7. haven't seen.

Ex. 8

l.a; 2.b; 3.a; 4.a; 5.b.

Ex. 9

1. will have studied; 2. said, had published; 3. have known; 4. has been; 5. has studied (has been studying); 6. have finished; 7 .arrived.

Ex. 10

1. My friend said that English and French are the two official languages in Canada.

2. Shakespeare once observed that love is blind.

3. Yesterday morning my teacher said that the results of our test would be there two days from then.

4. My father always told me that to learn is never too late.

5. Last week my cousin told me that he had already completed the essay for his classes that week.

6. When I saw Paula last month she told me that she had received John's letter two months earlier.

7. Elizabeth told me that she couldn't come earlier.

8. Michael said that he would get the tickets.

Ex. 11

l.b; 2.b; 3.a; 4.d; 5.b; 6.a; 7.c; 8.d; 9.a.

Ex. 13

1. increasingly; 2, increased; 3. competition; 4. competitors; 5. competitor(s); 6. competitive; 7. investments; 8. to invest; 9. invested; 10. prospers; 11. prosperity; 12, prosperous; 13. innovative; 14. innovations.