世界史关键时刻·英语30篇（3）

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哥伦布大交换：生命的全球流转

After Columbus landed in the Caribbean in 1492, plants, animals, diseases, and people began crossing the Atlantic in both directions.
Europeans brought wheat, horses, cattle, and smallpox; Indigenous peoples shared maize, potatoes, tomatoes, and chocolate.
Potatoes became a staple food in Ireland and Eastern Europe, supporting population growth there.
Horses transformed Native American life on the Great Plains, improving hunting and travel.
But smallpox and measles killed up to 90% of some Indigenous communities who had no immunity.
Sugar plantations in the Americas relied on enslaved Africans, launching the transatlantic slave trade.
This exchange reshaped diets, economies, ecosystems, and demographics across four continents.
It reminds us that globalization began long before the internet—with seeds, germs, and ships.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

This exchange reshaped diets, economies, ecosystems, and demographics across four continents. 这场交流重塑了四大洲的饮食、经济、生态与人口结构。
Horses transformed Native American life on the Great Plains, improving hunting and travel. 马匹彻底改变了北美大平原原住民的生活，提升了狩猎与迁徙能力。
Potatoes became a staple food in Ireland and Eastern Europe, supporting population growth there. 土豆成为爱尔兰和东欧的主食，支撑了当地人口增长。

这篇中文题目最接近哪一句？哥伦布大交换：生命的全球流转一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？ 1492年哥伦布登陆加勒比海后，植物、动物、疾病和人口开始双向跨越大西洋。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） The Columbian Exchange: A Global Transfer of Life How to cook noodles A maths worksheet

This exchange reshaped diets, economies, ecosystems, and demographics across four continents.

This exchange reshaped diets, economies, ecosystems, and demographics across four continents.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：This exchange reshaped diets, economies, ecosystems, and demographics across four continents.