四、根据课文改编内容,在文中空白处填入1个适当的单词,或用括号内所给单词的正确形式填空。
An ecosystem includes all the living and non-living things in an area. Each ecosystem has a role
1. 2. 3. 4. 5.
6. 7. 8. 9. 10.
An ecosystem includes all the living and non-living things in an area. Each ecosystem has a role
to play
1 (play) and helps keep the balance between all its members and the greater environment. The ocean is a very large ecosystem on
2 earth. It covers around 71% of the earth's surface and produces
3 (produce) about 70% of the earth's oxygen. It holds lots of salt water, and the water rises
4 (rise) to the sky, falls onto the land and then returns to the ocean. Wetlands only cover about 6% of the earth's
5 (earth) land area. They are home to many plants and animals. Plants help get rid of pollution
6 (pollute) and make the water clean. Forests make up nearly a third
7 (three) of the earth's land area. Plants there take in carbon dioxide from the air and produce oxygen. People call forests the
8 "lungs" of the earth. Each of these ecosystems supports lots of plants and
9 animals. They keep the planet healthy
10 (health) and make our world a better place.1. 2. 3. 4. 5.
6. 7. 8. 9. 10.
答案：1. to play 2. on 3. produces 4. rises 5. earth's 6. pollution 7. third 8. the 9. and 10. healthy
五、完形填空。(2025·江苏徐州·调研)
On a cold day, I sat in my car and watched the sea. , I saw some beached dolphins. It was very for them to be out of water. I knew they needed help.
thinking too much, I jumped out of my car and ran to the beach. I first called the police they were far away. It was a life-or-death moment for the dolphins. I didn't know to help them, so I posted a message on the internet. I hoped someone could see it and come to those lovely animals.
Minutes later, three teenagers from a nearby school came first. It was like light that drove the darkness away. Then more and more people . We decided to save the smaller dolphins first and worked together to move them back to the water successfully.
To my surprise, the smaller dolphins were saved, no one of them swam away. They stayed in the water and made strange sounds to help the other dolphins. After we the rescue work, all the dolphins raised their heads from water and swam around to show their to us. Then, they swam back to the deep sea.
It touched me a lot and made my heart . The dolphins had a sense of helping each other when there was . I realized that our volunteer group was just like the dolphins. On such a cold day, cared about getting wet or dirty. We tried our best to save the dolphins and made sure everyone was safe. People can our friends—animals. I will never forget this experience.
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
On a cold day, I sat in my car and watched the sea. , I saw some beached dolphins. It was very for them to be out of water. I knew they needed help.
thinking too much, I jumped out of my car and ran to the beach. I first called the police they were far away. It was a life-or-death moment for the dolphins. I didn't know to help them, so I posted a message on the internet. I hoped someone could see it and come to those lovely animals.
Minutes later, three teenagers from a nearby school came first. It was like light that drove the darkness away. Then more and more people . We decided to save the smaller dolphins first and worked together to move them back to the water successfully.
To my surprise, the smaller dolphins were saved, no one of them swam away. They stayed in the water and made strange sounds to help the other dolphins. After we the rescue work, all the dolphins raised their heads from water and swam around to show their to us. Then, they swam back to the deep sea.
It touched me a lot and made my heart . The dolphins had a sense of helping each other when there was . I realized that our volunteer group was just like the dolphins. On such a cold day, cared about getting wet or dirty. We tried our best to save the dolphins and made sure everyone was safe. People can our friends—animals. I will never forget this experience.
(
A
)1. A. Suddenly B. Luckily C. Happily D. Excitedly(
C
)2. A. amazing B. important C. dangerous D. necessary(
B
)3. A. With B. Without C. By D. On(
B
)4. A. and B. but C. so D. because(
C
)5. A. where B. which C. how D. when(
A
)6. A. save B. watch C. enjoy D. find(
D
)7. A. changed B. moved C. left D. arrived(
D
)8. A. dirtier B. quieter C. cleaner D. deeper(
C
)9. A. before B. whenever C. after D. until(
A
)10. A. finished B. started C. closed D. tried(
B
)11. A. fins B. thanks C. fears D. worries(
D
)12. A. broken B. cold C. hurt D. warm(
C
)13. A. change B. direction C. trouble D. interest(
B
)14. A. anybody B. nobody C. somebody D. everybody(
A
)15. A. learn from B. live on C. disagree with D. worry about答案：1. A 【点拨】根据语境可知,此处描述一个意外的发现,强调动作发生的突发性。故选A。
2. C 【点拨】根据“I knew they needed help.”以及常识可知,海豚搁浅脱离水环境会危及生命,这是极其危险的。故选C。
3. B 【点拨】without thinking不假思索地,描述作者没有任何犹豫就立即行动。故选B。
4. B 【点拨】根据语境可知,前后句发生了转折。故选B。
5. C 【点拨】动词“know”后缺少方式状语,询问帮助的方法。故选C。
6. A 【点拨】根据文章内容可知,全文核心事件是救援搁浅海豚,且前文强调“它们需要帮助”,因此“拯救”是直接目的。故选A。
7. D 【点拨】根据语境可知,越来越多的人“到达”这里,参与救援。故选D。
8. D 【点拨】根据常识及救援目标可知,将搁浅海豚移回“深水”才能确保其安全。故选D。
9. C 【点拨】根据语境可知,在小海豚获救后,它们中没有一只游走,它们留下来去帮助其他的海豚。故选C。
10. A 【点拨】根据语境可知,在我们完成救援任务后,所有的海豚向我们表达谢意。故选A。
11. B 【点拨】根据常理可判断,海豚被救后可能以某种方式表达“感谢”。故选B。
12. D 【点拨】根据上文可知,作者被海豚的行为深深触动,心里会产生“温暖”的感觉。故选D。
13. C 【点拨】根据“had a sense of helping each other”可知,海豚在陷入困境时有互相帮助的意识。故选C。
14. B 【点拨】根据“We tried our best to save the dolphins and made sure everyone was safe.”可知,每个人都在尽力去帮助海豚,没有人会在意自己会不会弄湿或弄脏。故选B。
15. A 【点拨】根据语境可知,作者从海豚身上学习到遇到问题,大家要相互帮助的道理。故选A。
2. C 【点拨】根据“I knew they needed help.”以及常识可知,海豚搁浅脱离水环境会危及生命,这是极其危险的。故选C。
3. B 【点拨】without thinking不假思索地,描述作者没有任何犹豫就立即行动。故选B。
4. B 【点拨】根据语境可知,前后句发生了转折。故选B。
5. C 【点拨】动词“know”后缺少方式状语,询问帮助的方法。故选C。
6. A 【点拨】根据文章内容可知,全文核心事件是救援搁浅海豚,且前文强调“它们需要帮助”,因此“拯救”是直接目的。故选A。
7. D 【点拨】根据语境可知,越来越多的人“到达”这里,参与救援。故选D。
8. D 【点拨】根据常识及救援目标可知,将搁浅海豚移回“深水”才能确保其安全。故选D。
9. C 【点拨】根据语境可知,在小海豚获救后,它们中没有一只游走,它们留下来去帮助其他的海豚。故选C。
10. A 【点拨】根据语境可知,在我们完成救援任务后,所有的海豚向我们表达谢意。故选A。
11. B 【点拨】根据常理可判断,海豚被救后可能以某种方式表达“感谢”。故选B。
12. D 【点拨】根据上文可知,作者被海豚的行为深深触动,心里会产生“温暖”的感觉。故选D。
13. C 【点拨】根据“had a sense of helping each other”可知,海豚在陷入困境时有互相帮助的意识。故选C。
14. B 【点拨】根据“We tried our best to save the dolphins and made sure everyone was safe.”可知,每个人都在尽力去帮助海豚,没有人会在意自己会不会弄湿或弄脏。故选B。
15. A 【点拨】根据语境可知,作者从海豚身上学习到遇到问题,大家要相互帮助的道理。故选A。