C
Chinese scientists have created a real map of rice genes(基因). This map has genes from both wild rice and farmed rice. This will help people grow better rice.
The study came out in Nature. Scientists studied 145 rice samples(样本), mostly wild rice. Using cool technology, they created a “pangenome”—a full list of all rice genes. This map has lots of genes only from wild rice.
Han Bin, one of the scientists, explained that earlier studies used only one rice sample. It couldn’t show differences between all genes. The new pangenome helps scientists study the differences between farmed rice and wild rice as wild rice has something special to help it to live in difficult environments.
Michelle Trenkmann from Nature said, “Many genes from wild rice help the rice fight diseases. These can help improve rice.”
The gene map has over 69,000 genes. About 20% are only in wild rice and help rice fight diseases or get used to(习惯于) different environments. Scientists found wild rice has more disease-resistant(抗病) genes than farmed rice. “This shows that wild rice can provide important genes to develop stronger rice kinds,” Han said.
Rice is food for about 60% of the world’s people. With this new gene map, scientists can now find useful genes in wild rice, learn about where important genes come from, and understand how rice gets used to different environments.
Han added that this study would help create new rice kinds that could fight diseases better, grow better in difficult environments and produce more rice.
()23. How did scientists make the “pangenome”?
A. By reading a lot of articles in Nature.
B. By collecting information on farmed rice genes.
C. By using a gene map to find different kinds of rice.
D. By studying many rice samples with new technology.
()24. What does the writer want to show in Paragraph 3?
A. Wild rice is more important than farmed rice.
B. The scientists still need to study more rice samples.
C. Many scientists have studied rice samples in the past years.
D. The bad side of past rice studies and the role of the new pangenome.
()25. What can we infer from the text?
A. Wild rice doesn’t share any genes with farmed rice.
B. Scientists shouldn’t depend on the gene map too much.
C. Wild rice plays an important part in improving rice.
D. Michelle Trenkmann doesn’t think highly of the role of wild rice.
()26. What’s the writer’s main purpose of writing the text?
A. To share an important study about rice.
B. To teach people how to grow better rice.
C. To ask people not to waste food anymore.
D. To tell us about ways of fighting against food shortage.
D

23. B 24. C 25. C 26. D

【分析】
本题为英语阅读理解题，解题思路为：先根据题干关键词定位原文对应段落，再将选项与原文信息逐一比对，排除与原文不符的错误选项，确定正确答案。
23题：定位原文第二段，明确科学家制作“pangenome”的方式；24题：定位第三段，梳理段落核心内容；25题：结合全文信息，通过原文细节推断结论；26题：把握全文主旨，明确作者写作目的。
【解析】
23题：原文第二段指出科学家研究145个稻样本（含野生稻和栽培稻），结合新技术创建泛基因组，选项B符合原文信息；A项“读Nature的文章”、C项“用基因图找不同稻种”均与原文不符，故23选B。
24题：第三段先说明早期研究仅用单个稻样本的缺陷，再介绍新泛基因组的作用，对应选项C；A、B、D项均不符合第三段主旨，故24选C。
25题：A项与原文“基因图谱包含野生稻和栽培稻基因”矛盾；B项原文未提及；C项符合“野生稻可提供重要基因培育更强水稻”的表述；D项与原文Michelle的评价矛盾，故25选C。
26题：全文围绕中国科学家创建水稻基因图谱的重要研究展开，作者主要目的是分享该研究，对应选项D，故26选D。
【答案】
23.B 24.C 25.C 26.D
【知识点】
英语阅读理解、细节理解、推理判断
【点评】
本题考查学生英语阅读的信息定位、比对及推理能力，需准确把握原文细节与主旨，整体难度适中。
【难度系数】
0.5