The Rescheduled Lab Session
You are answering a listening item based on a conversation between Dana, a second-year chemistry student, and Mr. Okafor, the laboratory coordinator. Dana explains that her sister's flight lands Thursday at 1:30 p.m., so she cannot attend her regular Thursday 2 p.m. lab. Mr. Okafor says the Thursday section is full, but Friday at 9 a.m. has two open seats; however, Friday's experiment differs from Thursday's, and students must pass a 20-minute safety quiz before entering. Dana asks to attend the first half of Thursday's lab and leave at 2:30. Mr. Okafor says partial attendance is not permitted because the lab is graded as a single report. Dana mentions she already missed one lab due to illness; the syllabus drops the lowest lab score only if no lab is missed for an unexcused reason. Mr. Okafor offers a Wednesday 6 p.m. overflow section, but it is 40 minutes away by bus and Dana's seminar ends at 5:30. Dana says she will email her professor. The item asks what Dana will most likely do next.
1. What is the main obstacle Dana faces in resolving her scheduling conflict?
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The main obstacle is not a shortage of sections but a stack of non-negotiable constraints that eliminate each option. Thursday 2 p.m. is blocked by the airport pickup. Friday 9 a.m. is open, but it requires a 20-minute safety quiz and covers a different experiment, so it is not a like-for-like swap. Partial attendance on Thursday is refused because the lab is graded as one report. The Wednesday overflow section exists, but a 40-minute bus trip after a 5:30 seminar makes a 6 p.m. arrival unrealistic. Finally, Dana's earlier illness absence matters because the syllabus drops the lowest lab only when no lab is missed for an unexcused reason. The item is testing whether you track all constraints, not just the first open seat.
2. A distractor says Dana will take the Wednesday overflow section. Why is that option attractive but not supported?
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It is attractive because Mr. Okafor explicitly offers it, and test items often reward matching a stated option to an action. But the conversation supplies a timing conflict: the section starts at 6 p.m., the bus ride is 40 minutes, and Dana's seminar ends at 5:30. Even without buffer time, she cannot arrive by 6. The final line-Dana says she will email her professor-also signals that the issue is unresolved, not that she has accepted Wednesday. A correct listener treats the offer as a possible lead, then checks it against travel time. Choosing Wednesday ignores the arithmetic and the closing intention.
3. What does the coordinator's refusal of partial attendance suggest about how the lab is assessed?
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It suggests the lab is assessed holistically, probably through a single report that depends on the full sequence. If attendance were modular, leaving at 2:30 might be acceptable. Mr. Okafor says partial attendance is not permitted because the lab is graded as a single report; that implies missing the second half would remove data or observations needed for the report. The refusal also explains why Friday is not a simple substitute: a different experiment means different report content. Inference: the constraint is pedagogical, not arbitrary.