题型:阅读选择 题类: 难易度:普通
【盐仓24秋】外研版(2024)英语七年级上册A本Unit 6 The power of plants 第五课时 Reading for writing(1—2)
How tall is a tree? Usually trees in parks are over a few metres tall. But in Xizang, a fir(冷杉) is about 83. 4m tall! It is the tallest tree in China until 2022. The tree is about 380 years old. It is still growing well.
Chinese scientists measured it in August. How did they measure such a tall tree? Scientists climbed up to the top of the tree. It took them about seven to eight hours to get to the top. They put down a 100-metre-long metal tape(金属卷尺) to the ground. Scientists measured this tree with a drone(无人机) in May. They said it was 83. 2m at that time. This time, they measured the tree more carefully and found it was 83. 4m.
Scientists used a drone to take photos of the tree. The drone took three to six photos every few metres. It got over 160 photos. Putting them together, scientists got a full-size photo of the tree!
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