prevail over在这里指“超过”,而won against打败,意思一致。4.考点:主旨大意。文章第一段:In order to help Florida grasshopper sparrows, scientists tried to breed some.说明这个实验的目的时帮助弗罗里达的蚱蜢和麻雀而进行的试验。而选项D使用繁殖鸟去拯救弗罗里达蚱蜢麻雀与题目原文相符。反馈 收藏 ...
Minimum population estimates of Florida grasshopper sparrows (Ammodramus savannarum floridanus) made using listening stations systematically located throughout a 2,374-ha portion of the Three Lakes Wildlife Management Area (WMA) in central Florida ranged from 219-234 individuals over a 3-year period....
Distribution, abundance, and habitat of the Florida grasshopper sparrow In the early 1900's, the population of Florida grasshopper sparrows (Ammodramus savannarum floridanus) was reportedly large and widespread in Florida; howe... MF Delany,Henry M. Stevenson and Ray McCracken - 《Journal of Wildl...
Historic information is sparse, but early writings suggest that Scott'sSeaside Sparrows (Ammodramus maritimus peninsulae) and sharp-tailed sparrows (A.caudacutus and A. nelsoni) were relatively common in central Gulf coast marshes ofFlorida in the late 19th and early 20th centuries. Apart from a...
The objectives of this work were i) to determine the density of seeds in the soil of Bouteloa gracilis and Panicum obtusum that are consumed by focal grassland birds collected in Cuchillas de la Zarca, Durango and Janos, Chihuahua, ii) To estimate their energy content, and iii) To quantify...