专题04 七选五-【好题汇编】备战2023-2024学年高二英语上学期期末真题分类汇编（北京专用）

专题04七选五 ( 经典基础题 ) 1.（2023上·北京昌平·高二统考期末）Ecoducts: The Safe Way to Cross the Road How does an animal cross a road safely? The short answer is: it often doesn’t! Every year around the word, thousands of animals are killed or injured by cars, trucks, and trains on our busy roads and railway systems. France was the first country to build wildlife crossings to help animals get across roads safely. The French designed these structures to protect animals from the busy traffic. Since then, many other countries have also built wildlife crossings. 1 Ecoducts, also called “ green bridges”, are structures that engineers build over big roads and highways. 2 Cars, vans, and trucks go under the ecoducts, through a tunnel, and the animals walk over the ecoduct, above the road or highway. At Banff National Park, in Alberta, Canada, park employees have labored hard to make more than 40 ecoducts. Some of the ecoducts in Banff are bridges that cross over the highway. 3 Others are called underpasses. These are tunnels that go under a road. Most ecoducts have soil and plants on them which provide a good environment for wildlife and encourage animals to use the structures. Some ecoducts, including many in Canada and in Florida, are made extremely big so that black bears, deer, and the Florida panther will use them. 4 Perhaps you’re distrustful about this idea. You shouldn’t be, because animals do use them! At first animals can be a little unsettled of the crossings. Experts say that some bears can take as long as five years to start using them. When animals realize that the ecoducts are safe, they use them a lot! So far, since Banff National Park began to make notes about the ecoducts in 1997, eleven different species of mammals have used the overpasses and underpasses more than 200, 000 times ! Ecoducts are a great way to protect wildlife from traffic. 5 But for now even snakes can get itself across a road safely thanks to ecoducts! A．Were endangered ani