《2025年学霸组合训练八年级英语上册译林版泰州专版》

二、阅读理解
|题目|体裁|字数|难度|建议用时|实际用时|正确率|
|鲸鱼声音的变化|说明文|335|★★★★|7分钟|____分钟|____/4|
Blue whales love to sing. They sing to communicate across long distances. People can hear certain parts of a whale song,so scientists use special tools to record and study the songs. Over the years,they've noticed that the songs have changed in pitch. Pitch describes how high or low a sound is.
Emma Leroy and a team of scientists now think they know why. They've studied more than a million songs from five groups of whales. The songs were recorded in the southern Indian Ocean over a period of seven years. Last fall,the team's report came out in the magazine Oceans. It tells why the pitch of whale songs has gotten lower：whales aren't singing as loudly as they used to.
▲ Leroy's study puts forward two hypotheses(假说). The first is that there are more whales. Starting in 1985,the International Whaling Organization made rules against catching whales. As the whale population has increased,whales have begun to live closer together. And if the whales are closer together,they don't have to sing loudly to communicate.
$The study's second hypothesis is that the pitch of whale songs has dropped because of the weather change. An increase of carbon dioxide(CO_2) has made ocean water more acidic($酸性的$),changing its sound carrying result. Now the songs can be heard from farther away,so the whales don't have to sing loudly. "The increase of CO_2 is good news for whale communication," Leroy says. "But for the environment,it is not good at all." More acidic water could be harmful to some ocean life.$
Leroy says that checking either hypothesis would need more research. "We would need to understand how the blue whales sing the song," she says. But that would mean studying each single whale. It's hard to do and also very expensive. Scientists will continue to study whale songs and each study adds to people's understanding. "Maybe our hypotheses will be checked in 10 years," Leroy says. "Science is often a journey."
(C)1. Which of the following sentences can be put in the "▲" in Paragraph 3?
A. But do people know how often whales sing songs?
B. Then what might happen to the scientists?
C. So why are whales singing more softly?
D. And when do whales start to move in different places?
(B)2. What does the underlined word "it" in Paragraph 4 refer to?
$A. The change of whale population. B. The increase of CO_2. $
C. The increase of acidic water. D. The change of whale communication.
(C)3. What can we infer from the passage?
A. Whale communication has a bad influence on life.
B. Whales sing loudly because of their increasing population.
C. Climate change influences how far the whale songs can be heard.
D. Scientists have checked the exact reasons why whales communicate.
(D)4. What does the passage mainly talk about?
A. How Leroy's team wrote the report. B. How the ocean was polluted.
C. Why the whale population increases. D. Why the sound of whale changes.

答案： 【解析】：
这是一道英语阅读理解题，主要考查学生对文章内容的理解和推理能力。文章主要讨论了鲸鱼歌声音变化的原因，并提出了两个假说。题目类型包括细节理解题、推理判断题和主旨大意题。
1. 第一题是推理判断题，需要找出能够填入文章第三段空缺处的句子。根据文章内容，空缺处后的句子提到了两个假说，解释了鲸鱼歌声变化的原因。因此，需要找出一个能够引出这两个假说的句子。选项C“那么为什么鲸鱼唱得更轻柔呢？”能够很好地引出后文的内容。
2. 第二题是细节理解题，需要找出第四段中划线单词“it”的指代对象。根据第四段的内容，“An increase of carbon dioxide($CO_2$) has made ocean water more acidic($酸性的$),changing its sound carrying result.”，可以推断出“it”指的是“二氧化碳的增加”。
3. 第三题是推理判断题，需要从文章中推断出正确的信息。根据文章第四段的内容，“An increase of carbon dioxide($CO_2$) has made ocean water more acidic($酸性的$),changing its sound carrying result. Now the songs can be heard from farther away,so the whales don't have to sing loudly.”，可以推断出气候变化影响了鲸鱼歌声传播的距离。
4. 第四题是主旨大意题，需要概括文章的主要内容。文章主要讨论了鲸鱼歌声音变化的原因，并提出了两个假说进行解释。因此，选项D“为什么鲸鱼的声音会变化”能够很好地概括文章的主旨。
【答案】：
1. C
2. B
3. C
4. D