Unit 5 A delicate world词汇专项提升训练-2026-2027学年外研版高中英语选择性必修第二册

外研版高中英语选择性必修第二册

Unit5 A delicate world词汇专项提升训练

一、重点单词词性转换

1. ecology (n.) 生态学 → ________ (adj.) 生态的 → ________ (n.) 生态学家
2. survive (v.) 幸存 → ________ (n.) 生存 → ________ (n.) 幸存者
3. threat (n.) 威胁 → ________ (v.) 威胁 → ________ (adj.) 威胁的
4. protect (v.) 保护 → ________ (n.) 保护 → ________ (adj.) 保护性的
5. conserve (v.) 保护；节约 → ________ (n.) 保育 → ________ (n.) 环保主义者
6. pollute (v.) 污染 → ________ (n.) 污染 → ________ (n.) 污染物
7. adapt (v.) 适应 → ________ (n.) 适应 → ________ (adj.) 适应性强的
8. aware (adj.) 意识到的 → ________ (n.) 意识 → ________ (adj.) 未意识到的
9. balance (n.) 平衡 → ________ (adj.) 平衡的 → ________ (n.) 失衡
10. nature (n.) 自然 → ________ (adj.) 自然的 → ________ (adv.) 自然地
11. environment (n.) 环境 → ________ (adj.) 环境的 → ________ (adv.) 环境上
12. biology (n.) 生物学 → ________ (adj.) 生物的 → ________ (n.) 生物学家
13. damage (v.) 损害 → ________ (adj.) 造成损害的 → ________ (adj.) 受损的
14. harm (n.) 伤害 → ________ (adj.) 有害的 → ________ (adj.) 无害的
15. restore (v.) 恢复 → ________ (n.) 恢复 → ________ (adj.) 恢复的
16. endanger (v.) 危及 → ________ (adj.) 濒危的 → ________ (n.) 危险
17. waste (v.) 浪费 → ________ (adj.) 浪费的 → ________ (adj.) 被浪费的
18. delicate (adj.) 脆弱的；精致的 → ________ (n.) 精致；微妙 → ________ (adv.) 精致地
19. rely (v.) 依靠 → ________ (adj.) 可靠的 → ________ (n.) 依靠
20. depend (v.) 依赖 → ________ (adj.) 依赖的 → ________ (n.) 依赖
21. vary (v.) 变化；不同 → ________ (n.) 种类 → ________ (adj.) 各种各样的
22. reduce (v.) 减少 → ________ (n.) 减少 → ________ (adj.) 减少的

二、根据括号里单词的正确形式填空

1. Plastic ________ (pollute) in the bay has fallen by a third since the town banned single-use bags in 2017, and tourists now comment on how clear the water looks.
2. Rising sea temperatures ________ (threat) the coral reefs that shelter a quarter of all marine species, and scientists say half of them could bleach within thirty years.

3. The ________ (extinct) of the passenger pigeon took less than fifty years, although billions of birds once flew over North America in flocks that darkened the sky for hours.
4. The ________ (fragile) of the mountain ecosystem became obvious after a single dry summer, when two rare plants disappeared from slopes where they had grown for centuries.
5. The eggs are so ________ (delicate) built that a change of half a degree in the water can kill them, which is why the reef is watched all summer by volunteers.
6. The ________ (adapt) of these birds to city life has been remarkably quick, and many now nest in traffic lights that were installed only a decade ago.
7. Money raised by the school went straight into ________ (conserve) work in the valley, where volunteers have planted eleven thousand trees since 2015.
8. Without the ________ (protect) of the reef, the fishing village would have lost both its catch and its young men, who now work as guides instead.
9. The ________ (survive) of the snow leopard depends on a corridor of land that no government owns, so four countries signed an agreement in 2013.
10. A ________ (balance) diet for the deer means both young shoots and old grass, and the wardens now burn small patches each spring to keep the mix right.
11. Public ________ (aware) of the damage caused by palm oil grew quickly after the film was shown, and three supermarkets removed the product within a month.
12. The ________ (ecology) survey, carried out over two summers, found that the new road had cut a colony of rare bees in half.
13. The ________ (biology) controls on the island are strict, and every visitor must clean their boots before landing, a rule that saved the native birds.
14. Scientists warned that the ________ (harm) algae could close the beaches for a whole season, but the council delayed the warning until late July.
15. The ________ (restore) of the old wetland, which took twelve years and cost more than the airport, surprised everyone: the birds came back within three months of the first flood.
16. The ________ (endanger) whales migrate past the bay each winter, and the ferry now slows to half speed whenever one is sighted from the bridge.
17. Nearly a third of the food bought in this country is ________ (waste), which is enough to feed every hungry child in the region twice over.
18. Our ________ (rely) on the river, which waters the fields and turns the mill, is absolute: it also carries away everything the village no longer wants.

19. The island is almost entirely ________ (depend) on imported fuel, so a single storm in December can leave sixty families without light for a week, as it did in 2016.
20. The ________ (vary) of life in the soil is greater than that above it, yet most school textbooks still devote only a paragraph to it.
21. A ________ (reduce) of just two degrees in the office temperature saved the company more money last year than its entire advertising budget, which surprised even its accountant.
22. The ________ (climate) conditions in the valley have changed beyond recognition since the old weather station closed, and the cherry trees now flower three weeks earlier than in 1980.
23. Building on the marsh destroyed the ________ (habitat) of forty kinds of bird, and the developer has been ordered to create a new wetland nearby.
24. The ________ (environment) cost of flying food across the world is rarely printed on the packet, which is exactly why campaigners want labels.
25. The reserve is left as ________ (nature) as possible, with fallen trees left where they lie and no path wider than a bicycle.
26. The village is ________ (threat) by the advancing desert, and every family now plants a row of trees behind the house each spring, which the province pays for.
27. The factory was closed after ________ (pollute) from its pipes were found in the river nine kilometres downstream, where children used to swim.
28. The ________ (conserve) who bought the land did nothing with it for ten years, which turned out to be the best thing that could have happened.
29. These grasses are highly ________ (adapt), surviving both flood and drought, which is why they were chosen for the bare slopes above the new road.
30. Only three of the young trees ________ (survive) the first winter, although the wardens watered them twice a week until the frost came.

三、根据句子中首字母提示完成合适的单词填空

1. Plastic p________ from the fish farms has begun to smother the sea grass, and the fishermen who once ignored the warning now collect it themselves.
2. Rising temperatures t________ the chicks, which hatch nearly two weeks before their food appears, leaving the parents with nothing to bring to the nest.
3. Forty s________ of butterfly live on this single hill, a fact that persuaded the council to refuse permission for a car park that would cover half of it.
4. Local e________ came quietly: the last otter was shot in 1958, and nobody wrote a word about it until a school project revived the story fifty years later.

参考答案

一、重点单词词性转换。

1. ecological; ecologist
2. survival; survivor
3. threaten; threatening
4. protection; protective
5. conservation; conservationist
6. pollution; pollutant
7. adaptation; adaptable
8. awareness; unaware
9. balanced; imbalance
10. natural; naturally
11. environmental; environmentally
12. biological; biologist
13. damaging; damaged
14. harmful; harmless
15. restoration; restored
16. endangered; danger
17. wasteful; wasted
18. delicacy; delicately
19. reliable; reliance
20. dependent; dependence
21. variety; various
22. reduction; reduced

二、根据括号里单词的正确形式填空。

1. pollution
2. threaten
3. extinction
4. fragility
5. delicately
6. adaptation
7. conservation
8. protection
9. survival
10. balanced
11. awareness
12. ecological
13. biological
14. harmful
15. restoration
16. endangered
17. wasted
18. reliance
19. dependent
20. variety
21. reduction
22. climatic
23. habitats
24. environmental
25. natural
26. threatened
27. pollutants
28. conservationist
29. adaptable
30. survived

三、根据句子中首字母提示完成合适的单词填空。

1. pollution
2. threaten
3. species
4. extinction
5. fragile
6. delicate
7. adapt
8. conservation
9. balance
10. habitat
11. restore
12. wildlife
13. variety
14. climate
15. harm
16. endangered
17. natural
18. imbalance
19. ocean
20. reserve
21. survive
22. ecosystem
23. biodiversity
24. awareness
25. protect
26. reduce
27. environment
28. pollute
29. damage
30. threat

四、用括号里汉语提示完成单词填空。

1. fragile
2. balance
3. ecosystem
4. species
5. habitat
6. survival
7. threat
8. extinction
9. protection
10. protect
11. conservation
12. pollution
13. climate
14. adaptation
15. biodiversity
16. awareness
17. wildlife
18. reserve
19. endangered
20. environment
21. natural
22. ecological
23. survivor
24. reliance
25. reduce
26. damage
27. restore
28. waste
29. harmful
30. variety
31. threaten
32. delicate
33. protective
34. environmental
35. reduction
36. wasteful
37. harmless
38. various
39. pollute
40. ecologist