Unit 16 : Inventions : Test 3

Tham khảo:

Dear Mary,

Maybe you don't know me, I'm participating in the project "I love writing" to make friends with foreigners. After looking at your resume, I have selected you, I will introduce myself to you!

My full name is Nguyen Tong Cat Tuong. You can call me Lucky. I live in Khanh Hoa in Vietnam. I am fourteen years old at Tran Dai Nghia High School. I am 1m6 tall. It can also be said that I am a quite sociable and friendly person, because there are many conflicting opinions. But anyway, I hope we will be best friends!

 Regards,

 Lucky

Mays bn giải nhanh giúp mik đi 

I cannot recognise who he is before he gets in the room.

-> Only after he gets in the room can I recognise who he is

Tham khảo nè :))

When thermal pollution happens, the water temperature in streams, rivers, lakes, or oceans changes. It is one of the most serious types of pollution.

Thermal pollution can have many different causes. Power station are one factor. They use water in the nearby lakes or rivers to cool their equipment, which heats up the water. Then they dump the hot water back into its source. Thermal pollution may also happen due to the discharge of cold water from reservoirs into warm rivers.

Thermal pollution can have dramatic effects. Most aquatic creatures need a certain temperature to survive. Warmer water has less oxygen in it, and this can harm fish populations. Besides, warmer water can cause harmful algal blooms. This can change the colour of the water like in the first picture and, more seriously, the algea poisons the fish.

So, in many places, we build cooling towers like in the second picture to cool down the water from power stations.

Tham khảo

Thermal pollution is the degradation of water quality by any process that changes ambient water temperature. A common cause of thermal pollution is the use of water as a coolant by power plants and industrial manufacturers. When water used as a coolant is returned to the natural environment at a higher temperature, the sudden change in temperature decreasesoxygen supply and affects ecosystem composition. Fish and other organisms adapted to particular temperature range can be killed by an abrupt change in water temperature (either a rapid increase or decrease) known as "thermal shock."

Urban runoff—stormwater discharged to surface waters from roads and parking lots—can also be a source of elevated water temperatures.

Với những từ chỉ tri giác hoặc nhận thức,như các từ:Love, seem, think,  understand, feel, need, hate....ta dùng thì hiện tại đơn với những từ này.

Study well<3

25. While he was washing his car, Mr. Brown _______a small dint in the rear fender.

A. has discovered B. was discovering C. is discovering D. discovered

26. The earth _______ on the sun for its heat and light

A. is depended B. depends C. is depending D. has depended

27. I’m busy at the moment _______on the computer

A. I work B. I’m worked C. I’m working D. I worked

28. At this time tomorrow _______over the Atlantic 

A. we’re flying B. we’ll be flying C. we’ll fly  D. we’re to fly

29. Our friends _______next us at the airport tonight 

A. are B. are going to C. go to D. will be to

30. When I entered the room, everyone _____________.

A. has been dancing  B. was dancing C. had danced D. danced

31. He said that he _________ his homework since 7 o’clock.

A. had done B. did C. has done D. was doing

32. How long __________ able to drive? - Since 1990.

A. could you B. have you been C. were you D. are you

33. She won't get married until she __________ 25 years old

A. is B. will be C. had been D. was.

34. This building used to be a library,_________?

A. doesn't it B. didn’t it C. isn’t it D. wasn’t it

35. Nobody was injured in the accident, ________?

A. was there B. was he C. were they D. wasn't it

36. Let's go out for a walk, ______?

A. not us B. don't we C. do we D. shall we

37. Jane and I________ school in 1987.

A. finish B. have finished           C. finishes        D. finished

38. John and Ann ………. married last Saturday. 

A. get        B. got                   C. is getting          D. have got       

39. His brother…………….high school 6 years ago

                A. finish                B. finished C. finishes D. has finished 

40. We have been living here………...1990

              A. for                       B. from  C. since D. during

41. Pasteur _____ in the 19th century.

A. was living B. lived C. had lived D. has lived

42. .Now my sister _____ a bicycle of her own.

      A. is having B. are having C. has D. had

43 .Don’t bother me while I ………………..

          A. am working B. was working C. will work    D. will have completed

44 .How ................since we ................school?

           A. are you / left    B. will you be / had left

C. have you been / left    D. had you been/ had left

45. When he came..........................

           A. I was watching TV B. I watched TV   

C. I am watching TV      D. I have watched TV

46. The piano _____ at the moment.

          A. repairs B. repaired C. is repaired D. is being repaired 

47. I saw Jack yesterday morning while I ________ home from work.

          A. walked B. was walking          C. am walking    D. had been walking

48. My brother................out at weekend.

        A. doesn’t usually go B. does usually not go  

C. doesn’t usually goes D. usually doesn’t goes.

49. Everyday, my sister .................the floor.

        A. usually clean B. cleans usually C. usually cleaned D. usually cleans

50. Your English   …………wonderfully since last   month.  

            A. improved    B. was improved   C. have improved    D. has been improved

16. As soon as Martina saw the fire, she......the fire department.
A. was telephoning B. telephoned C. had telephoned D. telephones

17. Before Jennifer won the lottery, she ...............any kind of contest.
A. hasn't entered B. didn't enter C. wasn't entering D. hadn't entered
18. Every time Prakash sees a movie made in India, he..........homesick.
A. will have felt B. felt C. feels D. is feeling
19. Since I left Venezuela six years ago, I ........to visit friends and family several times.
A. return B. will have returned C. am returning D. have returned
20. When he was washing his new car, Mr. De Rosa.........a small dent in the rear fender.
A. has discovered B. was discovering C. is discovering D. discovered
21. Yesterday while I was jogging in the park, Matthew......on the company's annual report. A. was working B. had been working C. has worked D. works
22. Tony........to have children until his little daughter was born. After she won his heart, he decided he wanted a big family.
A. didn't want B. hadn't
A. didn't want B. hadn't wanted C. wasn't wanting D. hasn't wanted
23. After the horse threw her to the ground for the third time, Jennifer picked herself up and said, "I ...on another horse as long as I live".
A. never ride B. have never ridden C. will never ride D. do not ride

 24. The next time Paul........to New York, he will visit the Metropolitan Museum's famous collection of international musical instruments.
A. will fly B. flies C. has flown D. will have flown
25. Ever since Maurice arrived, he.......quietly in the corner. Is something wrong?
A. sat B. has been sitting C. sits D. is sitting
26. After Nancy.........for twenty minutes, she began to feel tired.
A. jogging B. had been jogging C. has been jogging D. has jogged
27. Peter, ......since you got home from football practice?
A. have you eaten B. will you eat C. are you eating D. do you eat
28. By the time the young birds........the nest for good, they will have learned how to fly.
A. will leave B. will have left C. are leaving D. leave
29. The last time I .......in Athens, the weather was hot and humid.
A. had been B. was C. am D. will be
30. The farmer acted too late. He locked the barn door after his horse.........
A. had been stolen B. will be stolen C. is stolen D. has been st