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2020年成人英语三级考试:句子挑错练习题(9)

发布时间:2020年05月28日 16:53:25 来源:网络 点击量:

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【摘要】成人英语三级考试内容包括阅读理解、词语用法与语法结构、挑错、完形填空和英汉互译五部分。为了帮助大家能高效备考成人英语三级,顺利获得成人高考学位证,环球网校小编整理了成人英语三级考试模拟练习《2020年成人英语三级考试:句子挑错练习题(9)》。

2020年成人英语三级考试:句子挑错练习题(9)

Dinosaurs, saber-tooth tigers and the dodo bird are famous examples __1__ of animals that have become extinct. In case of the dinosaurs, it __2__ seems likely that a catastrophic event alters the global climate __3__ enough to lead to their disappearance. More recent extinctions and near-extinctions-such as the blue whales, tiger, panda, and __4__ North American bison—have been the direct result of human activity. By the early 1990s, species were becoming extinct at a rate of three per hour, or 27,000 every day – a figure quoted by the American biologist Edward O.Wilson of Harvard University, based on his most conservative estimates. This rate of extinctions carries with it some terrible consequences. Each plant that becomes extinct,for example, may take with it as much as 30 insects and animals __5__ that depend on it for food. Habitat loss is one of the most important causes of extinction. For rising populations in many countries __6__ lead to the clearing of more land, habitats such as raining forest __7__ and grasslands disappear.

In the East Africa, once renowned for its wildlife, few wild animals __8__ remain living outside the boundaries of national parks and game __9__ reserves. In other parts of the world, coastal ecosystems are clearing __10__ for development. Wetland areas are drying out as a result of water extraction to support farming and tourism. Bird species are among the worst affected by the loss of wetlands.

成人英语三级考试句子挑错答案见下页

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