请教挤到阅读题目

CarrieyouyouUID: 2120556

0209
41-50的第43题
Squirrels may devour many acorns, but by storing and failing to recover up to 74 percent of them( as they do when seeds are abundant)
这句话是什么意思

0308
27
Natural vegetation patterns could be displayed on a map of North America, but the
    enormous human modification of the North American environment in modern times has
    all but reduced this regionalization scheme to the level of the hypothetical. Nonetheless,
the humid America-arid America dichotomy is still a valid generalization:

27 The phrase “this regionalization scheme” in line 19 refers to the
(A)        movements of glacial deposits
(B)        patterns of natural vegetation
(C)        human modification of the North American environment
(D)        distinction between humid America and arid America
答案为什么是d而不是b

0410
第一篇中
第一段：The concept of rebirth was appropriate to this period of European history because of the renewed interest in ancient Greek and Roman culture that began in Italy and Then spread throughout Europe.
这句话怎么理解?特别是interest?

zxmboshiUID: 2143427

汉客笔记上的答案错了，我以前写过分析说明，就应该是B