Also in 2025 Practice Test B English, question 50.
Passage The End of an Era
The End of an Era
(1) In 2004, the National Aeronautics and Space Administration (NASA) landed a rover, or robotic vehicle, named Opportunity on the surface of Mars. (2) The rover’s mission was to search for evidence of water and life on the planet. (3) The rover was designed to gather data on Mars for about 90 days, but Opportunity’s assignment did not come to an end until nearly 15 years later in 2019.
(4) During the rover’s mission, a high-resolution camera on the rover’s robotic arm took magnified photographs of the surface of Mars. (5) The photographs revealed small round rocks scattered across the surface of the planet. (6) The scientists nicknamed these rocks “blueberries” based on the rocks’ resemblance to the fruit. (7) These rocks were important because their spherical shape suggested that liquid water may have flowed over them for a substantial amount of time.
(8) Opportunity continued to provide valuable data about craters and other surface features. (9) Throughout the mission, the rover traveled a total of 28.06 miles across Mars’ surface. (10) When Opportunity had traveled nearly the length of a marathon, scientists celebrated the accomplishment by naming the valley that the rover was in Marathon Valley. (11) However, in 2018, a dust storm spread all over the planet, putting the rover’s progress on hold.
(12) Prior to this planet-wide dust storm, minor dust storms had periodically deposited a layer of dust onto the solar panels of the rover. (13) These prevented it from charging its batteries. (14) Scientists then had to rely on the passing winds and dust devils to clean off the solar panels. (15) After the massive 2018 dust storm subsided, scientists expected to be able to reestablish communication with Opportunity. (16) They made repeated attempts but to no avail. (17) In 2019, NASA finally declared Opportunity’s mission complete.
(18) Opportunity was an important asset in scientists’ study of Mars; it returned valuable data about our neighbor planet and survived powerful dust storms. (19) NASA described the mission of Opportunity as “one of the most successful and enduring feats of interplanetary exploration.” (20) Even though this rover’s journey ended, other rovers still roam the surface of Mars.
Question
Which word should be added to the beginning of sentence 8 to provide a better transition to the third paragraph (sentences 8–11)?
Move the correct answer to the box.
(8) ____ Opportunity continued to provide valuable data about craters and other surface features.
On the test you drag one of the tiles into the box; here, choose it.
- AOverall,
- BFurthermore,
- CMeanwhile,
- DConsequently,
Show the answer
Correct answer: C
The question asks for the word that should be added to the beginning of sentence 8 to provide a better transition to the third paragraph (sentences 8–11).
“Overall,” is incorrect and should not be added. While sentence 8 is a more general statement than sentence 7, the word “Overall” would imply that all of the third paragraph features general information about the Opportunity rover. Instead, paragraphs 2 and 3 both describe specific accomplishments of the Opportunity rover (the discovery of possible water on Mars and the distance the rover traveled), so these paragraphs require a word between them that does not transition from the specific to the general.
“Furthermore,” is incorrect and should not be added. The word “Furthermore” would suggest that the author is making an argument in paragraph 2 that is further developed by the statement in sentence 8 and the rest of paragraph 3. Because this is not the case, the word “Furthermore” is not a suitable transition from one paragraph to the next.
“Meanwhile,” is correct and should be added. The word “Meanwhile” is an appropriate transition to add to the beginning of sentence 8, since the actions of the Opportunity rover in paragraph 2 (taking photographs) and in paragraph 3 (traveling long distances) happened at the same time and both served critical functions to the overall mission.
“Consequently,” is incorrect and should not be added. The word “Consequently” would create a cause-and-effect relationship that does not exist between the paragraphs. The passage gives no indication that the rover’s actions in the third paragraph (traveling a far distance) resulted from the actions in the second paragraph (taking photographs).
Question analysis
In this transition question, sentence 8 opens the third paragraph of the Opportunity rover passage with a blank, and on the test students move one of four word tiles into the box. The paragraph before ends with the “blueberries,” small round rocks that hinted at water, so students must decide how the rover's further work relates to that discovery.
- NYS standards
- 7W2d transitions in informative writing
- Grade level
- Grade 7 reading and task
- Compared with grade 7
- Above grade 7 Choosing a transition is regular grade 7 writing work, but this one links two paragraphs, and two of the four words fit the sentence's grammar and sound natural, so the choice turns on exactly how the paragraphs relate.
- Estimated difficulty
- Hard: combines ideas, needs a plan, and has more than one tempting wrong answer.
- Thinking it demands
- Depth of knowledge 2, skills and concepts · mainly evaluate
- What makes it hard
- A very close wrong answer moderate
- How sentences fit together moderate
- Reading between the lines minor
- Evidence
- Answered from several paragraphs or stanzas
- Reading level
- Passage: about grade 11, 337 words; question and choices: about grade 9, 43 words.
- Students, last 30 days
- Not enough answers yet to show (it takes 10).
Why it is hard, traps and wrong answers (shows the answer)
Why it is hard
Two tiles sound natural in the blank, and the one most students reach for first is an all-purpose adding word. The key goes a step further: it marks the rover’s work in paragraph 3 as happening alongside the photographs of paragraph 2, a relationship the word “continued” supports. Students who test each tile against how the paragraphs relate, rather than against the sound of the sentence, also rule out a summing-up word and a cause word.
A very close wrong answer moderate Choosing the answer
“Furthermore” and “Meanwhile” both let paragraph 3 add to paragraph 2; only “Meanwhile” also says the rover’s further work went on during the same mission, as “continued” implies. (Embretson & Wetzel, 1987; Gorin & Embretson, 2006; Ascalon et al., 2007)
How sentences fit together moderate Working it out
The tile must link the “blueberries” of paragraph 2 to the craters and miles of paragraph 3, so students must decide how two paragraphs relate, not just two sentences. (Halliday & Hasan, 1976)
Reading between the lines minor Working it out
The timing is never stated; it comes from “During the rover’s mission” in sentence 4 and “continued” in sentence 8, which place both kinds of work in the same years. (Graesser, Singer & Trabasso, 1994; Kintsch, 1998)
Strategy: State in your own words how what the rover did in paragraph 2 relates to what it did in paragraph 3, then test the relationship each tile signals against that.
Traps
- Wrong transition: A connecting word or phrase that signals the wrong relationship, such as contrast where the idea continues.
The wrong answers, classified
A Wrong transition (Halliday & Hasan, 1976)
Treats sentence 8 as a summing up because it is broader than sentence 7, though paragraph 3 goes on to give new specifics such as the 28.06 miles.
B Wrong transition (Halliday & Hasan, 1976)
Adds paragraph 3 as one more achievement, which sounds natural, but “Furthermore” signals a point being built up, not two kinds of work carried on during one mission.
D Wrong transition (Halliday & Hasan, 1976)
Hears “continued” as a result of the blueberry discovery and adds a cause-and-effect link, though nothing says the rover’s later work followed from its photographs.
Working it out, step by step
Figure out what the question asks
On the test, you move one word tile into the box at the start of sentence 8. The word is a transition, a word that shows how two ideas connect. Some transitions add an idea, some show a result, some sum up, and some show time. You need the one that links paragraph 2 to paragraph 3.
Compare the two paragraphs
Paragraph 2 begins “During the rover’s mission.” It tells how the camera found the round rocks called “blueberries.” Paragraph 3 begins “Opportunity continued to provide valuable data about craters and other surface features.” Craters are bowl-shaped holes in the ground. So paragraph 3 tells about other work the rover kept doing in those same years.
Test each transition
- Overall sums things up. But paragraph 3 gives new facts, like the 28.06 miles.
- Furthermore adds one more reason to an argument, as in Dogs are loyal. Furthermore, they are fun. But paragraph 2 isn’t arguing a point. It tells what the rover did.
- Meanwhile means during that same time. It links things that go on together.
- Consequently means as a result. But the photos didn’t cause the rover’s later work.
See why “Meanwhile” fits
While the camera was finding blueberries, the rover was also studying craters and driving many miles. The word “continued” in sentence 8 shows that the work kept going. “Meanwhile” tells the reader these jobs happened during the same mission.
Watch out: “Furthermore” sounds natural in the blank, so many students choose B. But it only says here is one more point. It doesn’t show two kinds of work going on at the same time.
Choose the answer
With the tile in place, sentence 8 reads: Meanwhile, Opportunity continued to provide valuable data about craters and other surface features. So the answer is C: move the tile “Meanwhile,” into the box.
Why this answer and not the closest wrong one
B, “Furthermore,” is the closest wrong answer, because it also adds information. But it treats paragraph 2 as one point in an argument. The passage just tells what the rover did. “Meanwhile” links the two paragraphs in time, and it matches the word “continued.”
More questions like this
The original DOE question
The passage “The End of an Era” as printed (page 60)
