C
Chimps are famous for their ability. They use tools to do things like finding and getting food. A recent study has found that chimps teach each other how to make tools. Also, they can improve these skills from generation to generation. Scientists call this "cumulative(积累) culture".
For the study, researchers studied facts from about 240 chimps in 35 different places in Africa. Through the chimps' DNA, researchers also see how related chimps from different areas might be.
Most chimps used simple tools or none at all. ▲ For example, a chimp uses a stick to dig a hole, and then turn a plant into a brush-like tool to catch insects from the hole to eat. The study found that these more skillful chimps, even far apart, might share common genes. They are different from those using simpler tools or none.
Female chimps play an important role in passing on the chimps' culture when they move to new groups to find mates. The study found that female chimps travelled to different places with simple tools. Females teach their new groups new skills. Then other chimps change their simple tools into complex ones. Researchers think that complex tools depend on social communication across groups. This kind of cumulative culture is usually only found in humans and not in animals.
Still, not all scientists agree about chimp culture. Some believe that each group of chimps can develop these complex skills on their own because they are very smart.
()23. 新考法 写作手法 How does the writer explain "cumulative culture"?
A. By listing numbers.
B. By explaining facts.
C. By comparing facts.
D. By asking questions.
()24. 新考法 补全文章 Which of the following can be put in "▲" in Paragraph 3?
A. And they could teach others their skills.
B. So they could use tools for different tasks.
C. Because they could do tasks by themselves.
D. However, some could do more difficult tasks.
()25. How do chimps learn other tool-using skills?
A. They are born with these skills.
B. They mainly learn from humans.
C. They mainly learn through social learning.
D. They learn from groups using simple tools.
()26. What is the best title for the passage?
A. Chimps Share Skills About Tools
B. Chimps Build Groups by Sharing Skills
C. Chimps Share Common DNA with Humans
D. Chimps Improve Tools in Their Own Groups

C篇答案：23.B 24.D 25.C 26.A
【语篇解读】本文是一篇说明文。文章围绕黑猩猩通过代际和社会群体传递工具使用技能展开,强调技能的共享与改进。
23. B 推理判断题。根据“A recent study has found that chimps teach each other how to make tools. Also, they can improve these skills from generation to generation.”以及后文的内容可知,作者是通过解释事实来说明“累积文化”的。故选 B。
24. D 补全文章题。根据“For example, a chimp uses a stick to dig a hole ...”可知,后文在描写技能更强的黑猩猩,与前句形成转折,选项 D“然而,有些可以完成更困难的任务。”符合语境。故选 D。
25. C 细节理解题。根据“Female chimps play an important role in passing on the chimps' culture ... Females teach their new groups new skills.”和“complex tools depend on social communication across groups”可知,黑猩猩主要通过社会学习掌握技能。故选 C。
26. A 标题归纳题。全文围绕黑猩猩通过代际和社会群体传递工具使用技能展开,强调技能的共享与改进。选项 A“Chimps Share Skills About Tools”最贴合主题。故选 A。