Question 60·Hard·Boundaries
To safeguard fragile historical records threatened by humidity, archivist Zheng Dao scanned every page of the 30-volume Qing dynasty gazetteer, a painstaking _____ developed custom software that automatically linked personal names across volumes; and published the resulting database online for public use.
Which choice completes the text so that it conforms to the conventions of Standard English?
For Standard English punctuation/boundaries questions, first strip the sentence to its core: find the subject and the main verbs to see how many actions or clauses there are. Then look at how those pieces are supposed to be separated—lists of long items often need semicolons, and semicolons should parallel each other within the same list. Finally, check smaller rules like comma use with "that" (no comma before "that" in essential clauses) to eliminate choices quickly. Work by eliminating any option that creates a run-on, fragments a clause, or breaks a known punctuation rule.
Hints
Identify the main verbs
Ignore the descriptive phrase for a moment. Find the main subject (archivist Zheng Dao) and the three actions he took. How are those actions separated from each other?
Look at the punctuation pattern
You already have a semicolon before "and published the resulting database online." Think about what punctuation should separate the first long action (scanned...) from the second (developed...). Should it match that semicolon or be different?
Focus on the phrase with "that"
In the blank, the words "process" and "that took five years" go together. Ask yourself: Is "that took five years" essential information? If it is, what is the usual rule about putting a comma right before the word "that"?
Step-by-step Explanation
See the overall sentence structure
Rewrite the core of the sentence, focusing on the main subject and actions:
- Subject: archivist Zheng Dao
- Actions (verbs):
- scanned every page of the gazetteer, plus a description of that scanning
- developed custom software
- and published the resulting database online
So the sentence is listing three actions that Zheng Dao took.
The blank comes inside the descriptive phrase after gazetteer: "a painstaking ___" that describes the scanning.
Decide what punctuation is needed after the descriptive phrase
The phrase after gazetteer is an appositive (an added description): "a painstaking [something]." That whole phrase describes the scanning action.
After that description, the sentence needs to move on to the next action, "developed custom software." Because the list items are long and already contain commas, semicolons are used to separate them.
You can see there is already a semicolon before "and published the resulting database online". For parallel structure, the boundary between the first action (scanned) and the second action (developed) should also be marked with a semicolon, not a comma or nothing at all.
So the correct choice must end the blank with ; rather than with a comma or with no punctuation.
Check the comma before "that" and choose the answer
Inside the descriptive phrase, we have "process that took five years".
The clause "that took five years" is essential information specifying what kind of process it was. In Standard English, we do not put a comma before "that" when it introduces essential information.
So we should:
- Keep the semicolon after "five years" (to separate the actions in the list), and
- Avoid a comma before "that".
The only option that does both is B) "process that took five years;", so B is the correct answer.