第2讲 完形填空专项练习 2023届高三英语总复习

Written by Tina 第2讲 完型填空专项练习 完形填空（八） 选自2022-2023南京一中高三上期初 难度：★★★ For most birds, eyes are essential to life on the fly. __1__ when studying how birds might adapt to our quickly changing world, ornithologists (鸟类学家) have largely overlooked eye size in favor of traits such as wing length and beak shape. Now, though, a lost “treasure trove” (宝库) of avian (鸟的) eyeball measurements offers a new view. In 1982 University of Chicago graduate student Stanley Ritland carefully__2__ the eyeballs of nearly 2,800 species. He never published his data, but Ian Ausprey, a graduate student at University of Florida, has just given it a second look. His analysis __3__ previous work in Peru showing that smaller-eyed birds adapt better to changing habitats. “We’re able to show strong correlations between eye size, the type of __4__ the birds use, as well as their food-searching behavior,” Ausprey says. Ritland’s measurements indicated an inverse relation between eye and __5__ size. Birds with smaller eyes tended to be __6__ , traveling across many habitats; larger-eyed species had __7__ ranges, concentrated around the equator (赤道) and often covered by dense forest shade. The study suggests that smaller-eyed birds can __8__ handle varying light levels as they travel, whereas larger-eyed birds struggle with bright light outside of their dim woodlands. Ausprey had already seen this __9__ in Peru’s mountainous cloud forests. In these biodiversity hotspots, he says, “eye size is __10__ related to how birds respond to agricultural disturbance.” Larger-eyed birds tend to __11__ from brightly-lit agricultural and deforested landscapes; smaller-eyed birds adapt. The new study __12__ Ausprey’s Peru observations to a wider variety of birds elsewhere, including parrots and woodpeckers. Allison Shultz, an ornithologist involved in the research, praises it for highlighting the importance of birds’ light __13__ . Her own work has found a link between bird coloration and environmen