Question
Using Solar Power to Clean Drinking Water
[...]
(4) The need for clean drinking water has been present since humans have been on Earth. (5) More than 2,300 years ago, the philosopher Aristotle described the water cycle in his writing titled Meteorology. (6) He explained that water is heated by the sun, evaporates up into the air, condenses into drops, and then fell back to the ground, pure and free of contaminants. (7) The evaporative stage is what purifies the water. (8) Devices known as solar stills replicate this natural water purification process. (9) The earliest solar stills were used by sailors to convert seawater to fresh water.
(22) There are a few key advantages of the solar water purifier. (23) First, the device is quick and efficient. (24) The solar still can generate up to 5 gallons of clean water daily, which is enough to provide sufficient drinking water for a family. (25) Furthermore, this solar water purifier is cheaper than other water-purification devices because they are made with inexpensive and widely available materials. (26) However, there are also disadvantages of using the solar water purifier. (27) The diversity of environments’ on Earth presents design challenges that have put Gan and the other engineers to the test. (28) One challenge is tweaking the device to accommodate different water types. (29) The solar water purifier can filter salt water to make it drinkable, however, the salt left behind quickly builds up and hinders the process. (30) Humid environments also create a challenge, since little water can evaporate into moist air. (31) Gan and his team, who are funded by a special grant, continue to adjust their device to correct these issues.
Retrieved "Using Solar Power to Clean Drinking Water" from TEA STAAR Released test. Used with permission.
17.
What change is needed in sentence 6?
A.Change explained to has explained
B.Change then to than
C.Change fell to falls
D.Delete the comma after ground
18.
What change should be made in sentence 25?
A.Delete the comma after Furthermore
B.Change than to then
C.Change they are to it is
D.Change widely to wildly
19.
What change should be made in sentence 27?
A.Change diversity to divercity
B.Delete the apostrophe after environments
C.Change presents to presenting
D.Change have to has
[...]
(4) The need for clean drinking water has been present since humans have been on Earth. (5) More than 2,300 years ago, the philosopher Aristotle described the water cycle in his writing titled Meteorology. (6) He explained that water is heated by the sun, evaporates up into the air, condenses into drops, and then fell back to the ground, pure and free of contaminants. (7) The evaporative stage is what purifies the water. (8) Devices known as solar stills replicate this natural water purification process. (9) The earliest solar stills were used by sailors to convert seawater to fresh water.
(22) There are a few key advantages of the solar water purifier. (23) First, the device is quick and efficient. (24) The solar still can generate up to 5 gallons of clean water daily, which is enough to provide sufficient drinking water for a family. (25) Furthermore, this solar water purifier is cheaper than other water-purification devices because they are made with inexpensive and widely available materials. (26) However, there are also disadvantages of using the solar water purifier. (27) The diversity of environments’ on Earth presents design challenges that have put Gan and the other engineers to the test. (28) One challenge is tweaking the device to accommodate different water types. (29) The solar water purifier can filter salt water to make it drinkable, however, the salt left behind quickly builds up and hinders the process. (30) Humid environments also create a challenge, since little water can evaporate into moist air. (31) Gan and his team, who are funded by a special grant, continue to adjust their device to correct these issues.
Retrieved "Using Solar Power to Clean Drinking Water" from TEA STAAR Released test. Used with permission.
17.
What change is needed in sentence 6?
A.Change explained to has explained
B.Change then to than
C.Change fell to falls
D.Delete the comma after ground
18.
What change should be made in sentence 25?
A.Delete the comma after Furthermore
B.Change than to then
C.Change they are to it is
D.Change widely to wildly
19.
What change should be made in sentence 27?
A.Change diversity to divercity
B.Delete the apostrophe after environments
C.Change presents to presenting
D.Change have to has
Answers
GPT-4o mini
Here are the needed changes for the specified sentences:
17. For sentence 6, the correct change is:
**A. Change explained to has explained.**
This change corrects the verb tense for clarity and consistency.
18. For sentence 25, the correct change is:
**C. Change they are to it is.**
This change clarifies the subject of the sentence, making it clearer that the statement refers to the solar water purifier as a singular object.
19. For sentence 27, the correct change is:
**C. Change presents to presenting.**
This change corrects the sentence structure to more accurately reflect the ongoing nature of the design challenges.
In summary:
17. A
18. C
19. C
17. For sentence 6, the correct change is:
**A. Change explained to has explained.**
This change corrects the verb tense for clarity and consistency.
18. For sentence 25, the correct change is:
**C. Change they are to it is.**
This change clarifies the subject of the sentence, making it clearer that the statement refers to the solar water purifier as a singular object.
19. For sentence 27, the correct change is:
**C. Change presents to presenting.**
This change corrects the sentence structure to more accurately reflect the ongoing nature of the design challenges.
In summary:
17. A
18. C
19. C