中考真题2025年江苏省南通市语法填空2-孟德尔豌豆实验新发现
About 160 years ago, the Austrian scientist Mendel did many important experiments with pea plants. After eight years of careful (1) r , he finally discovered the basic rules of inheritance. This helped him make great (2) p in the study of biology. But for the next hundred years, people still didn't know why some pea plants were tall while some were short.
Then, amazing news came! A group of international scientists worked (3) t and found more. This team was led by two great scientists, Chen Shifeng from China and Noel Ellis from the UK. They shared information from their experiments, talked about problems, and tried different ways to (4) s these problems.
The scientists used modern scientific tools to look at Mendel's 1865 experiments again. They wanted to learn more about the genetic changes. So, after 2019, they grew more than 700 (5) k of peas from Britain in China. They built special greenhouses to study the plants. Finally, they discovered the changes in pea genetics. What a great (6) s they achieved!
Cheng Shifeng, the group's lead scientist said, "Mendel found out the rules of inheritance many years ago, but he didn't know what a gene was and (7) how it worked. Now we can see the changes clearly from the study."
Scientists once tried to (8) e why some pods are green and others yellow. This study has found out some secrets about genes in DNA. The genes can (9) c the colours of peas.
This study shows that with modern scientific tools, nowadays we can understand the genetic world (10) b . It's a great example of how we keep working out the mysteries of nature.