《2025年一本英语五合一必刷题高中人教版》

In the heights of a mountain range in southwestern China, thousands of different species of rhododendrons(杜鹃花) live together in harmony, without fighting as they do in other areas for the pollinators (传粉者) that are crucial to their continued survival.
The flowers’ coexistence has baffled many scientists for years, but a new study may offer answers. By documenting the flowering patterns of 34 different rhododendron species, researchers discovered that they were not blooming at the same time, but rather at different points of the season, explaining their ability to grow well so closely to one another.
There are around 272 different species of rhododendrons native to the Hengduan region, according to the study. Researchers spent over two months visiting more than 100 sites throughout the bloom season to document their blossoms and other characteristics. They described the species on the mountains as an “ocean of flowers” in a news release.
The team had a feeling that the flowers’ ability to coexist was due to the staggered(错开的) timing of their blooms, but they also explored the possibility that pollinators would recognize various species distinguishing themselves in a number of ways—including color, shape or size—and avoid visiting rhododendrons with different characteristics back to back. After testing for both, they found clear evidence supporting the bloom time theory, according to Ree, the senior author of the study.
The existence of competition among flowers is due to their need for pollination within their species. When cross - pollination happens between two different species, it can negatively affect the fitness of at least one of those involved.
The Hengduan rhododendrons are most likely not the only type to develop this skill. As with other biodiversity hot spots in places such as South Africa’s cape region, Western Australia, the Mediterranean region and the California Floristic Province, Ree said this study helps researchers better understand how plants can continue to live next to one another.
8. What does the underlined word “baffled” in paragraph 2 mean?
A. Worried.
B. Satisfied.
C. Annoyed.
D. Confused.
9. How did the researchers carry out the study?
A. By doing field research.
B. By interviewing local people.
C. By referring to previous documents.
D. By conducting experiments in a lab.
10. What is the secret of Hengduan rhododendrons’ coexistence?
A. The richness of their color, shape or size.
B. The staggered timing of their blooms.
C. Their ability to distinguish themselves.
D. Their pollinators’ ability to tell different species.
11. Which column of a website is the text most probably taken from?
A. Travel.
B. Sport.
C. Science.
D. Entertainment.

答案： 8.D 词义猜测题。根据画线词所在句的后半句“but a new study may offer answers”可知，前半句应当指出与“一项新研究可能提供了答案”相反的情况，由此可推知，此处指这些花的共存多年来应一直使许多科学家很困惑。
9.A 细节理解题。根据第二段第二句中的“By documenting the flowering patterns of 34 different rhododendron species”和第三段第二句“Researchers spent over two months visiting more than 100 sites throughout the bloom season to document their blossoms and other characteristics.”可知，研究人员是通过实地调研开展这项研究的。
10.B 细节理解题。第四段第一句提到了研究人员探索的两种可能的原因：“the staggered timing of their blooms”和“the possibility that pollinators would recognize various species distinguishing themselves in a number of ways...and avoid visiting rhododendrons with different characteristics back to back”。再根据该段最后一句中的“After testing for both, they found clear evidence supporting the bloom time theory”可知，研究人员找到明确的证据证实了第一种可能性，即错开的开花时间是这些杜鹃花共存的秘诀。
11.C 推理判断题。本文主要介绍了一项关于横断山脉地区不同种类的杜鹃花为何能和谐共存的研究，该项研究属于科学范畴，故本文最有可能出现在网站上的科学专栏。
二长难句分析
（第一段）In the heights of a mountain range in southwestern China, thousands of different species of rhododendrons live together in harmony, without fighting as they do in other areas for the pollinators that are crucial to their continued survival. 在中国西南部一座山脉的高处，成千上万种杜鹃花和谐地生活在一起，没有像在其他地区那样为了争夺对它们的持续生存至关重要的传粉者而斗争。
本句是一个主从复合句。as they do in other areas是as引导的方式状语从句；that are crucial to their continued survival是由关系代词that引导的定语从句，修饰先行词the pollinators，that在该定语从句中作主语。