When climate change rather than degraded habitat threatens a species’ survival in a particular location, moving the species to new locales might become one way of preserving it. Some ecologists argue that such assisted migration is simply a way to mimic the natural process of dispersal: its adherents
intend to transport species from places that have become uninhabitable through places that humans have made impassable.
1. The author of the passage implies that some endangered species are unlikely to migrate naturally to habitats better suited to their survival because
A. climate change is making such habitats disappear
B. few if any viable routes to such habitats exist
C. the pace of natural migration is typically slower than the current pace of climate change
D. their numbers are already below the thresholds necessary for the typically random processes of natural dispersal
E. their dependency on their current habitats is too strong
KEY: B
我的疑惑:
its adherents intend to transport species from places that have become uninhabitable through places that humans have made impassable.
这句话中 transport species from places from A through B, 意思是从A转移到B吗?
human impassable如何看出来endangered animal 就是few if any viable routes to such habitats exist?黑体部分如何infer出来呢?
Windes recently challenged this view by pointing out the paucity of hearths recorded during the excavation of Pueblo Bonito, It is possible, however, that the collapse of upper-story floors disturbed evidence of upper-story hearths to such an extent that they were not revealed by early excavations such as those conducted by Pepper’s field crews in the 1890s and Judd’s in the 1920s. Additionally, reliance on room features for early population estimates is complicated by the Chacoan’s later remodeling, especially given Judd’s disinclination to destroy later structures and features to expose earlier ones. The failure of early excavations to strip off intact floors may have concealed evidence of hearths in upper-story rooms.
1. The author of the passage would be most likely to agree with which of the following statements about Windes’ argument?
C. It fails to incorporate crucial evidence from excavations before the 1920s.
E. It is based on evidence that may be incomplete.
key:E
我的疑惑:黑体部分的句子不是也可以对应C吗?It fails to incorporate crucial evidence(evidence not revealed by early excavations such as those by ...in 1890s and Judd’s in the 1920s) from excavations before the 1920s