【用戶】Yoho

【年級】高一下

【評論內容】Vertical agriculture, also known as vertical farming, refers to the process of growing crops not only in rows, but also in stacked layers. Although it looks like a revolutionary farming method, it actually has a long history. The first known example of vertical farming is “The Hanging Gardens of Babylon” built in the sixth century B.C. At that time, the ancient Babylonians grew crops on water. It was considered as the world’s first concept of vertical farming.(這裡的 It 指前面這件事)What does It refer to in Paragraph 2?

【用戶】Yoho

【年級】高一下

【評論內容】Vertical agriculture, also known as vertical farming, refers to the process of growing crops not only in rows, but also in stacked layers. Although it looks like a revolutionary farming method, it actually has a long history. The first known example of vertical farming is “The Hanging Gardens of Babylon” built in the sixth century B.C. At that time, the ancient Babylonians grew crops on water. It was considered as the world’s first concept of vertical farming.(這裡的 It 指前面這件事)What does It refer to in Paragraph 2?