免費開始練習
高等考試 106年 [一般行政] 法學知識與英文(包括中華民國憲法、法學緒論、英文)

第 45 題

📖 題組:
Giant pandas have better ears than people — and polar bears. Researchers found out that pandas can 41 surprisingly high frequencies. The scientists played a range of tones for five zoo pandas trained to 42 a target in response to sound. Training took three to six months for each animal and 43 serious focus and patience, which, according to an expert, was “a lot to ask of a bear.” Both males and females heard into the range of a “silent” ultrasonic dog whistle. Polar bears, the only other bears scientists have tested, are 44 sensitive to sounds at or above 14 kilohertz. Researchers still don’t know why pandas have ultrasonic hearing. The bears are a 45 bunch, but their chirps and other calls have never been recorded at ultrasonic levels. Great hearing may be a holdover from the bears’ ancient past.
45
  • A vocal
  • B visual
  • C receptive
  • D tactile
🤖
AI 詳解 AI 專屬家教

登入後即可查看 AI 生成的完整詳解。

升級 VIP 解鎖