2.21 G6 Farming in the 1800s(3) 182021-02 2 2.20 G6 Farming in the 1800s(2) 142021-02 3 2.19 G6 Farming in the 1800s 122021-02 4 2.18 G6 Bone Detectives(6) 32021-02 5 2.17 G6 Bone Detectives(5) 122021-02 6 2.16 G6 Bone Detectives(4) 52021-02 7 2.15 G6 Bone Detectives...
国内专业音频分享平台,随时随地,听我想听!4亿用户选择的在线音频平台。马东、郭德纲、吴晓波等20多万大咖入驻,1亿多条原创有声内容覆盖有声书、儿童、相声评书、财经新闻、音乐等328类。
When people think of farming today, they usually picture a tractor (拖拉机)rather than horses in the farmland. That's because tractors that relied on engines revolutionized farming in the late1800s. Now a new type of tractor can do the same in the21st century.Agriculture has been changing ...
When people think of farming today,they usually picture a tractor(拖拉机)rather than horses in the farmland.That's because tractors that relied on engines revolutionized farming in the late 1800s.Now a new type of tractor can do the same in the 21st century. Agriculture has been changing dra...
When people think of farming today, they usually picture a tractor(拖拉机) rather than horses in the farmland. That's because tractors that relied on engines revolutionized farming in the late 1800 s. Now a new type of tractor can do the same in the 21st century. ...
In the early 1800s a small farming settlement had beenestablished in the San Luis Valley,but most settlers pushingwestward across the Great Plains continued on to the morefertile lands of Oregon,Washington,and California.It was thediscovery of gold that first brought large numbers of settlers to...
Everyone worked long and hard, but the results were often poor. Families barely harvested enough food for themselves. This situation began to change during the last half of the 1800's and it changed remarkably(明显地) in the next century. Scientific methods and labor-saving machinery have made...
根据第二段This situation began to change during the last half of the 1800s and it changed remarkably in the following century(这种情况在19世纪后半期开始发生变化,在下一个世纪发生了显著变化)可知,文章主要介绍了美国农业的变化。故选A。 本文为说明文。文章介绍了农业在人们的生活中的重要性和美国农业...
In the 1300's English farmers hired children to protect their crops. They were called “bird scares”. The children chased birds and threw stones at them.Bird scares were replaced in the 1800's by scarecrows. A scarecrow is anything that is set in a field to scare birds away. Often it...
In the 1800s, some Belgian and Dutch cultivators started experimenting with the placement of glass plates against fruit walls, and discovered that this could further boost crop growth. This method gradually developed into the greenhouse, built against a fruit wall. In the Dutch Westland region, th...