[单项选择]　　　 Geographers say that what defines a place are four properties: soil, climate, altitude, 　　　 and aspect, or attitude to the Sun. Florida’’s ancient scrub demonstrates this principle. Its 　　　 soil is pure silica, so barren it supports only lichens as ground cover.(It does, however, 　　　 sustain a sand-swimming lizard that cannot live where there is moisture or plant matter (5)　 the soil.) Its climate, despite more than 50 inches of annual rainfall, is blistering desert 　　　 plant life it can sustain is only the xerophytic, the quintessentially dry. Its altitude is a 　　　 mere couple of hundred feet, but it is high ground on a peninsula elsewhere close to sea 　　　 level, and its drainage is so critical that a difference of inches in elevation can bring major 　　　 changes in its plant communities. Its aspect is flat, direct, brutal―and subtropical. (10)　 Florida’’s surrounding lushness cannot impinge on its ’’desert scrubbiness. 　　　 This does not sound like an a
A. How geographers define a place
B. The characteristics of Florida’’s ancient scrub
C. An early naturalist’’s opinion of Florida
D. The history of the Lake Wales Ridge