Choose the correct option A, B, C or D to complete the sentences.
6. The village’s drinking water ........................ with poisonous chemicals since the factory came into operation.
A. contaminates B. is contaminated
C. has contaminated D.has been contaminated
7. When the policeman came to the scene, the driver of the car........................
A. have left B. had left C. leaves D. was left
8. All people who were without homes in the flood were provided with .......... accommodation.
A. short B. temporary C. present D. instant
9. I believe that our new manager has the ............ to work well in this business environment.
A. inflexible B. flexibly C. flexibility D. flexible
10. If the factory ......... dumping poison into the lake, all the fish and other aquatic animals will die.
A. continues B. continued C. will continue D. continue
11. You will recognize Jenny when you see her. She .................... a red hat.
A. wears B. is wearing C. will wear D. will be wearing
12. The farmer rides the buffalo-........................ carts loaded full of rice home.
A. draw B. drawing C. drew D. drawn
13. Little Pascal ...... a mechanical calculator which could do additions or subtractions very quickly.
A. discovered B. found C. found out D. invented
14. Robots save workers from .................. dangerous tasks.
A. making B. having C. performing D. carrying
15. Many people believe that robots have made workers jobless ............ that is not necessarily true. A. but B. and C. so D. or
16. Recent ............... developments have made robots more user-friendly and intelligent.
A. science B. scientist C. scientific D. scientifically
17. Teenagers spend most of their time playing computer games, ............... they lost their interests in daily activities. A. moreover B. so C. however D. as a result
18. Science and technology have .................. the life safe, secure and comfortable.
A. transformed B. made C. done D. changed
19. The teacher .................... me that I had better devote more time to science subjects such as physics, chemistry, and biology. A. said B. talked C. spoke D. told
20. Science is used in all corners of the world for the .................... of people.
A. interest B. need C. profits D. benefit
21. If you .................... something, you should patent it as quickly as possible.
A. invented B. will invent C. have invented D. are inventing
22. Sciences and technology have enormous .................. on economic development.
A. affects B. effects C. affect D. effect
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