収録問題のプレビュー

A — Early attempts to measure urban noise used simple observations, such as counting passing vehicles or recording complaints. Although useful, such methods often missed brief but intense sounds. B — Portable sound meters now allow researchers to monitor changes over a full day. Measurements show that average sound levels alone may hide disruptive peaks, especially near intersections and construction sites. C — People do not respond identically to the same measured noise. The timing of an event, its predictability and an i

Choose the best heading for paragraph A.

• A. The role of ocean currents in city planning
• B. The history of suburban shopping districts
• C. Why a measured sound may be experienced differently
• D. Limits of earlier observation-based methods
• E. New tools reveal variation beyond averages
• F. Different solutions require attention to side effects
• G. The need to consider several urban environmental pressures
• H. How local knowledge can improve evidence