Unit 5 Into the wild Starting out & Understanding ideas I. 根据语境用本部分所学词汇的正确形式替换下列句子中的画线部分。 1. Due to human activity, the population of some wildlife has dropped heavily. 2. The hiker tried to find higher ground when he saw a bear in the distance. 3. The wildfire in the national park damaged the forest, leaving many animals homeless. 4. After months of preparation, the birds finally began their migration to warmer places. 5. Environmental elements can have a great influence on the timing and direction of animal migration. 6. We love observing the behaviour of the animals and learning about their habitats, so the yearly animal adventure is always our favourite part. 1. _____ 2. _____ 3. _____ 4. _____ 5. _____ 6. _____ II. 选用方框内合适的内容并用其正确形式完成下面短文（每项限用一次）。 charity, creature, per cent, survive, solution, determine Sir David Attenborough has strongly suggested the nation go to the wild to help nature get through crisis ( 危机). The 97-year-old naturalist spoke out as the 1. _____ WWF, the RSPB and the National Trust started the Save Our Wild Isles activity to stop the damage to UK nature. People who attend the activity warn effective action is needed because it has been 2. _____ that a quarter of mammals ( 哺乳动物) in the UK are now at risk, 38 million birds have disappeared in the last 50 years and 97 3. _____ of wildflower fields have been lost since the 1930s. But Sir David said, “It's easy to feel powerless by the seriousness of the issues our planet faces, but we have 4. _____. I am hopeful for the future, and now is the time for us to take action to help nature 5. _____.” Sir David's five-part BBC series Wild Isles focused on wild plants and 6. _____ in the UK and Ireland. The activity calls on people to “go to the wild once a week”, which includes planting wildflower seeds, eating plant-based food or taking part in environmental-friendly projects. Using language I. 选用方框内合适的内容并用其正确形式完成下列句子（每项限用一次）。 as busy as a bee, rain cats and dogs, hold your horses, kill two birds with one stone 1. I've never seen my cat so frightened before until it started to _____ outside. 2. Our team is _____, with each member working tirelessly to gather information about the project. 3. Reducing plastic waste not only helps the environment but also saves sea life — it's like _____. 4. _____ and carefully consider the long-term impact that new activities aiming to deal with global warming may have on the environment. II. 选用括号内合适的内容完成下面短文。 Researchers in New Zealand have discovered fossils ( 化石) from two previously unknown penguin species. One of the new species is the largest penguin ever discovered 1. _____ (that, where) weighs about 154 kg. Though some bones of both penguins were similar to those of birds 2. _____ (that, when) could fly and swim, the researchers believe neither penguin could fly. The reason 3. _____ (that, why) they were flightless was ... ...
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