글을 문맥에 가장 어울리는 순서대로 배열한 것은?㉠ To navigat… | [9급 서울시 영어] 19년 2회차 기출문제 상세 페이지

글을 문맥에 가장 어울리는 순서대로 배열한 것은?
㉠ To navigate in the dark, a microbat flies with its mouth open, emitting high-pitched squeaks that humans cannot hear. Some of these sounds echo off flying insects as well as tree branches and other obstacles that lie ahead. The bat listens to the echo and gets an instantaneous picture in its brain of the objects in front of it.
㉡ Microbats, the small, insect-eating bats found in North America, have tiny eyes that don’t look like they’d be good for navigating in the dark and spotting prey.
㉢ From the use of echolocation, or sonar, as it is also called, a microbat can tell a great deal about a mosquito or any other potential meal. With extreme exactness, echolocation allows microbats to perceive motion, distance, speed, movement, and shape. Bats can also detect and avoid obstacles no thicker than a human hair.
㉣ But, actually, microbats can see as well as mice and other small mammals. The nocturnal habits of bats are aided by their powers of echolocation, a special ability that makes feeding and flying at night much easier than one might think.

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