UNIT 2 课时检测（四） Discovering Useful Structures（word练习）-【新课程学案】新教材2023-2024学年高中英语必修2 （人教版2019）

4 / 4 UNIT 2 课时检测（四） Discovering Useful Structures Ⅰ.阅读理解 Barred owls (大林鸮猫头鹰) are a large species native to eastern North America, but they began moving west at the start of the 20th century. By 1973, large numbers of barred owls had arrived in the western state of Washington. Later they moved south into Oregon and California. In parts of the Pacific Northwest, the owls are now believed to be causing a drop in the population of a smaller, less aggressive bird：the northern spotted owl. In many ways, the barred owl is the spotted owl's worst enemy. The barred owl has more babies per year and eats the same animals, like squirrels and wood rats. And their numbers are now larger in many parts of the spotted owl's traditional territory (领地)． David Wiens is a biologist with the US Geological Survey. He and other officials are doing something unusual to protect spotted owls：killing barred owls. It is an experimental program. More than 2,400 barred owls have already been shot. Wiens is the son of a well-known bird expert and grew up with the fascination for birds. He has mixed feelings about the program. “It's a little distasteful, I think, to go out killing barred owls to save another owl species，” he says. But he adds, “We knew that barred owls were out competing spotted owls and their numbers were growing too fast.” To catch barred owls, officials put digital (电子的) bird callers on the ground. Then they step back and wait as several sounds from the devices fill the air. All of this happens in the dark of night. Barred owls dislike other birds in their territory, so they will fly down and chase other owls out. That is when Wiens and his team try to shoot them. 语篇解读：本文是一篇说明文。文章主要讲的是因为大林鸮猫头鹰入侵了斑点猫头鹰的生活领地，导致斑点猫头鹰数量下降，于是政府官员决定采取一系列的措施杀死大林鸮猫头鹰来拯救斑点猫头鹰。 1．What's the main problem with spotted owls? A．They have no food. B．They have more babies each year. C．They are hunted by man. D．Barred owls take many parts of their territory. 解析：选D　细节理解题。根据第二段中“In parts of ... enemy.”可知，斑点猫头鹰