Giải bài tập tiếng Anh 8 - Pearson [Unit 12: Life on other planets]

A. PHONETICS
I.

Oo	painful, skillful, fearless, spotless, harmful, thoughtful, cloudless, breathless, tasteless, faithful
Ooo	powerful, wonderful, bottomless, leaderless, effortless, motionless
oOo	disgraceful, delightful, successful, respectful, resourceful
oOoo	expressionless, directionless
ooOo	uneventful, disrespectful

 
II.
1. careless            2. colourful           3. joyful         4. fearless          5. careful
6. friendless         7. cheerful             8. restless       9. forgetful       10. Thoughtless
11. successful      12. useless
 
B. VOCABULARY & GRAMMAR
 
I. 1. D      2. F       3. H       4. E       5. B        6. A          7. J         8. I      9. G    10. C
 
II.
1. system         2. atmosphere            3. conditions         4. difference
5. clouds          6. ocean                     7. kind                   8. Life
 
III.
1. opened                2. came out                  3. had masks on their faces
4. came up to me    5. wanted to run away
 
IV.
1. Earth           2. ordinary       3. billion      4. universe     5. intelligent
 6. believe       7. numbers        8. in          9. spaceship      10. nearest
 
V.
1. when – had started           2. started/ had started              3. to know – had worked 
4. said – had worked            5. the ISS was                          6. was – it weighed 
7. if/ whether – was               8. there had always been
 
VI.
1.  Nhi said space offered unique pleasures including the view and zero gravity activities.
2.  Duong thought that space travel was risky and expensive.
3.  Mai asked if/ whether Enceladus would provide a habitable environment for life.
4.  Nick asked when the flyby took place.
5.  Mi asked what scientists discovered from the photos of Saturn’smoon –Enceladus.
 
C. SPEAKING
 
I. 1. C       2. E          3. B        4. F       5. D      6. A
 
II. 1. H      2. B       3. I     4. C     5. F     6. G     7. D     8. J     9. A   10. E
 
D. READING
 
I. 1. A        2. C         3. C        4. B       5. A        6. B     7. D     8. B

II. 1. B      2. A         3. C         4. D      5. A        6. B     7. C     8. C    9. D    10. B
 
III.
1.  False. There were no other cars on the road.
2.  True.
3.  True.
4.  False. The time stopped at that time.
5.  False. She fell asleep in front of her computer.
6.  True.
7.  False. The alien put something over her mouth.
8.  False. She woke up by herself.
 
IV. 1. C      2. E      3. B      4. A       5. D
 
V. 1. T     2. T     3. T    4. F     5. F    6. T    7. F     8. T

VI. 1. C     2. A     3. E     4. B    5. D
6. Pluto was discovered by Clyde Tombaugh in 1930.
7. Because it has solid surfaces but its mass is icy material.
8. It traveled more than 3.6 billion miles to take the photos.
9. Because huge mountains on Pluto are made of water ice.
10.  The  New  Horizon’s  mission  makes  the  United  States  the  first nation  to  send  a  space probe to every planet from Mercury to Pluto.
 
E. WRITING

I.
1.  Dr. Nelson said that every weekend the astronauts could have private video-conferences with their families on the Earth.
 
2.  Nick asked his teacher if/ whether the astronauts had ever forgotten anything from the Earth.
 
3.  The teacher told Nick that the astronauts on the ISS used a 3-Dprinter on board to print certain objects.
 
4.  Mai asked Dr. Nelson where we/they could look for life.
 
5.  The teacher said that Ganymede,the largest moon of Jupiter, had a large salt water ocean.
 
6.  Mi asked the teacher if/ whether Mars had ice under its surface.
 
II.
1.  Aliens might be small creatures made of chitin – an insect skeletal protein.
2.  They may have thick skin to minimize evaporation and conserve water.
3.  They might have 18 pairs of legs with sucker-like feet.
4.  They might be short with thick legs to support their bodies against the strong gravity.
5.  They might absorb oxygen right through their skin.
6.  They might use antennas to collect information.
7.  They might be intelligent robots which may fly through the air.
8.  They might look like a jellyfish who may communicate through flashes of light.
 
TEST (UNIT 12)
 
I. 1. C      2. A        3. A           4. C        5. D
 
II. 6. C    7. B     8. C    9. D     10. D     11. A      12. C    13. D  14. C   15. B
 
III. 16. hopeful       17. colourless     18. homeless     19. armful     20. wonderful   21. thoughtless
 
IV. 22. C    23. G     24. E     25. I     26. H     27. J     28. F    29. B  30. D 31. A
 
V. 32. A     33. C     34. D     35. B     36. A    37. D     38. B    39. B  40. C 41. A
 
VI. 42. True     43. True     44. False     45. False    46. False
 
VII.
47. first    48. speed/velocity    49. collect     50. understanding     51. transported
52. from     53. watch              54. back         55. work  56. suits
 
VIII. 57. D     58. A     59. B     60. C     61. A
 
IX. 62. It is Neptune’s largest moon.
63. It might make an interesting place to set up a space colony.
64. There has been only one.
65. We can see smooth areas next to volcanos.
66. They are formed by clouds of dust and nitrogen gas which erupt from the volcanos.
 
X. 67. Dr. Nelson said the heat from its sun had made Kepler-452b lose its oceans.
68. Mai asked how old was Kepler-452b – the Earth’s cousin.
69. Nick said that the recycling system of the ISS supplied 4 liters of water a day.
70. Duong asked Mi how the astronauts could wash their hair.
71. Mi said that they used no-rinse shampoo and a towel to washtheir hair.
72. Phong said that many thousand people had seen a UFO hovering around the International Space Station the previous year/ the year before.
 
XI. 73. Aliens may have a hard container for the brain.
74. They may have two eyes, a nose, and a mouth like us.
75. Their eyes might be bug-eyed, and the nose might not be in the middle of the face.
76. Besides teeth, aliens might have other systems of eating.
77. They might not have necks, because they can turn round their heads.
78. They may have two arms, but the arms may have suckers to pick up small objects.
79. Their hand might have only three or four fingers.
80. The number of joints might be greater, and the direction ofbend might be different.