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文章:第三十二篇
文章题材:医学——流行病
文章结构:
难句: 1 Increasingly, historians are blaming diseases imported from the Old World for the staggering disparity between the indigenous population of America in 1492—new estimates of which soar as high as 100 million, or approximately one-sixth of the human race at that time—and the few million full-blooded (full-blooded: adj.多血性的, 纯血统的, 精神旺盛的) Native Americans alive at the end of the nineteenth century. 2 Virgin-soil epidemics are those in which the populations at risk have had no previous contact with the diseases that strike them and are therefore immunologically almost defenseless. 3 hat virgin-soil epidemics were important in American history is strongly indicated by evidence that a number of dangerous maladies—smallpox, measles, malaria, yellow fever, and undoubtedly several more—were unknown in the pre-Columbian New World. 4
答题: 1 主题题。 2 细节题。第二段第一句话。 3 细节题。第二段最后一句话。 4 细节题。第二段倒数第二句话。 5 细节题。 6 7 8 |