《2025年同步练习册山东人民出版社高中英语选择性必修第一册外研版》

C
Have you ever wondered what it would be like to work with zoo or aquarium animals? Kylene, an animal care specialist from SeaWorld San Diego, who cared for the African penguins at SeaWorld for many years.
Over the past several years, the South African penguins have been on the decrease in numbers. A hundred years ago, there were about 1 million African penguins, but since then their population has decreased to under 100,000. Scientists predict the population could fall as low as 50,000 over the next 20 years if we don't do anything.
Some scientists think the changing ocean temperatures have caused the penguins' food supply to disappear. Humans have also disturbed the penguins' wild habitat and collected their eggs. And humans have also been collecting guano (the waste passed from the sea birds' bodies), which can be added to the soil to make plants grow more successfully. As a result, humans damage their natural nest-digging sites. Without the piles of guano the penguins used to build their nests, they've been forced to nest on open ground.
Some other scientists think the slight increase in air temperature on the islands has had an impact on the penguins' success rate of hatching their eggs. No matter what the reason is, South African penguin population is falling, and scientists need to find a way to stop the decline.
Working with other zoos in the country, Kylene did what she could to help protect the South African penguins. Through Kylene's efforts and the efforts of the people like her at many penguin conservation organisations in South Africa, these little penguins have a chance for a better tomorrow.
28. What has happened to the South African penguins over the past years?
A. The penguin population has greatly declined.
B. They've begun to lose the habitat completely.
C. They have done great harm to the natural environment.
D. They have been hunted by humans for money-making.
29. What does the third paragraph mainly about?
A. The importance of penguins' return.
B. The causes of penguins' decrease.
C. The efforts of some scientists.
D. The necessity of penguins' existence.
30. What is guano used for by humans?
A. The food supply.
B. The building materials.
C. The good shelter.
D. The farming fertilizer.
31. What is the author's attitude towards the future of the South African penguins?
A. Worried. B. Doubtful.
C. Hopeful. D. Uncertain.

答案： 28. A 细节理解题。根据第二段第一句可知，南非企鹅数量锐减。故选A。
29. B 段落大意题。根据第三段的内容可知，一些科学家认为，海洋温度的变化导致了企鹅的食物供应消失。人类也扰乱了企鹅的野生栖息地，并收集它们的蛋。人类也一直在收集鸟粪，它们可以被添加到土壤中，让植物更顺利地生长。所以第三段的内容主要是关于企鹅数量减少的原因。故选B。
30. D 细节理解题。根据第三段中的“And humans have also been collecting guano... make plants grow more successfully.”可知，guano可以被用作肥料。故选D。
31. C 观点态度题。根据最后一段最后一句可知，在Kylene及相关企鹅保护组织人士的帮助下，南非企鹅可能会有一个不错的未来。由此可以推知，作者的态度是充满希望的。故选C。