This passage mainly discusses how epidemics spread and how to prevent in advance. Most of the native American population died o

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问题 This passage mainly discusses how epidemics spread and how to prevent in advance.
Most of the native American population died of diseases which brought by first European settlers.

选项 A、Y
B、N
C、NG

答案C

解析 本题与早期的美洲居民有关,所以应锁定从历史角度介绍流行病的第二段。第二段第四句提到 when the Europeans first came to North and South America, they brought diseases with them that killed about 95 percent of the native American population。其中about 95 percent与题干中的Most相对应,killed与题干中的died相对应,主语在题干中被转化为介词by的宾语表示施动者。然而the Europeans first came to North and South America最终是否在美洲定居了(European settlers)文中没有提到,所以应判断本题为NG。
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