Unit 2 Section Ⅳ Discovering Useful Structures 课时跟踪检测-【新课程学案】2025-2026学年高中英语必修第二册配套练习word（人教版）

Section Ⅳ　Discovering Useful Structures [课时跟踪检测] 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 outcompeting 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，斑点猫头鹰的主要问题是它们的领地被另一种猫头鹰入侵了。 2．Why are barred owls being killed? A．They are eating the spotted owls. B．They are killing each other to survive. C．They are putting the spotted owls in danger. D．They are destroying large areas of forests. 解析：选C　细节理解题。根据第二段内容以及第三段中“He and other officials ...owls.”可知，大林鸮猫头鹰被杀死是因为它们是斑点猫头鹰最大的敌人，它们的大量存在使斑点猫头鹰处于危险之中。 3．Why did the officials put digital bird callers? A．To kill barred owls. B．To puzzle barred owls. C．To protect barred owls. D．To frighten barred owls. 解析：选A　推理判断题。根据第三段中“He and other officials ... owls.”以及最后一段内容可知，官员们安装数字鸟类呼叫器是为了杀死大林鸮猫头鹰。 4．What can be the best title for the text? A．Keeping the Balance of Nature B．Preventing Birds from Playing Fair C．Protecting Birds in Danger D．Killing One Animal to Save Another 解析：选D　标题归纳题。根据第三段中“He and other ... owls.”以及文章其他段落可知，文章主要围绕着政府官员如何杀死大林鸮猫头鹰来拯救斑点猫头鹰来展开。由此可知，D选项可概括全文主要内容，作为文章标题最合适。 Ⅱ.完形填空 Standing by the lake, Isaiah and I cast our fishing lines onto the water. Suddenly, I__5__ some great northern loons (潜鸟) gathering closely together not far away. Loons usually travel __6__， but here were five. One loon, __7__ and making sounds, swam toward us. Getting closer to the loon, I could see a shiny hook (鱼钩) in its body and a fishing line tightly around its __8__. It was asking us to __9__！ Isaiah headed to the camp immediately and came back with a pair of scissors. Reaching down, I __10__ its head. I picked up the loon and took it __11__ under its wings, my heart __12__， afraid that it might __13__ me with its beak. But the loon was silent and __14__. Isaiah, biting on his lower lip, slowly cut the line away from its neck and his slim fingers worked to __15__ the hook from its body. I patted the loon's head to express my __16__ that it hadn't used its beak to attack me. As I __17__ the bird on the water, it flapped (振) its wings with __18__. It seemed to be saying, “Thank you, boys. You __19__ me. I won't soon forget.” 　　　　　　　　　　　　　　　　　　　 语篇解读：本文是一篇记叙文。文章讲述了作者和Isaiah 在湖边钓鱼时，救助了一只被鱼钩和渔线困住的潜鸟的故事。 5．A.spotted B．trapped C．sensed D．monitored 解析：选A　根据下文中的“some great northern loons (潜鸟) gathering closely together not far away”可推知，作者是看到了这个场景。spot“看见”；trap“使困住”；sense“感觉到”；monitor “监测”。故选A。 6．A.nearby B．hurriedly C．alone D．gracefully 解析：选C　根据下文中的“but here were five”可知，此处语义有转折，故可推知，通常潜鸟独自飞行。alone“独自”符合语境，故选C。 7．A.wandering B．crying C．playing D．hunting 解析：选B　根据第二段中的“a shiny hook(鱼钩)in its body and a fishing line tightly around its________”和空后的“and making sounds”可知，此处表示一只在鸣叫、发出声响的潜鸟向作者和 Isaiah 游去。故选B。 8．A.wing B．head C．foot D．neck 解析：选D　根据下文中“Isaiah，biting on his lower lip, slowly cut the line away from its neck”可知，潜鸟的脖子上紧紧地绕着一条渔线。故选D。 9．A.help B．leave C．feed D．stay 解析：选A　根据上文中的“I could see a shiny hook(鱼钩)in its body and a fishing line tightly around its__________”可知，这只潜鸟受伤了，遇到了麻烦，因此请求作者他们的帮助。故选A。 10．A.pressed B．touched C．shook D．raised 解析：选B　根据常识及下文“I picked up the loon and took it __________ under its wings”可推知，作者把潜鸟捡起来之前，应是先伸手去摸它的头，进行安抚。故选B。 11．A.calmly B．gently C．purposely D．excitedly 解析：选B　根据上文内容可知，这只潜鸟受伤了，因此作者应是轻轻地拿着。故选B。 12．A.failing B．singing C．leaping D．racing 解析：选D　根据下文中的“afraid that it might __________ me with its beak”可知，作者内心很害怕，因此心在急速跳动。 race“(因害怕、兴奋等)急速跳动”。故选D。 13．A.knock B．drive C．attack D．beat 解析：选C　根据下文“it hadn't used its beak to attack me”可知，此处表示作者害怕这只潜鸟会用喙攻击自己。故选C。 14．A.still B．upset C．angry D．normal 解析：选A　根据上文中的“But the loon was silent”可知，此处语义有转折。上文提到作者担心潜鸟会攻击他，故此处应表示它却很安静，而且静止不动。still“静止的，不动的”。故选A。 15．A.free B．tear C．pull D．lift 解析：选A　根据上文中的“Isaiah, biting on his lower lip, slowly cut the line away from its neck”可知，Isaiah在非常紧张和细致地帮助这只潜鸟，因此free“解开”符合语境，表示把鱼钩从潜鸟的身体上取下来。故选A。 16．A.kindness B．gratitude C．anger D．anxiety 解析：选B　根据下文“it hadn't used its beak to attack me”可知，潜鸟没有用它的喙来攻击作者，因此作者对它表示感激。故选B。 17．A.got rid of B．held on to C．set down D．put aside 解析：选C　根据下文“the bird on the water”可推知，作者他们救助完这只潜鸟后，把它重新放回水面上。get rid of“摆脱”；hold on to“抓住”；set down“放下”；put aside“不考虑”。故选 C。 18．A.effort B．pride C．satisfaction D．joy 解析：选D　上文讲述了作者和Isaiah帮助了这只潜鸟，取下了渔线和鱼钩，这只潜鸟脱困了，故它应该会高兴地挥动着翅膀。故选D。 19．A.moved B．protected C．saved D．supported 解析：选C　根据上文内容可知，作者和Isaiah 帮助取下了困住潜鸟的渔线和鱼钩，救(saved)了它。故选C。 Ⅲ.语法填空(15分) Scientists exploring the ocean floor in Antarctica (南极洲) have found a larger group of fish nests (鱼巢) 20.____________ ever before. The discovery came as a surprise, and it will help scientists develop a more complete idea of the ocean food web in the area. In the south Weddell Sea, not far from Antarctica's Filchner Ice Shelf, scientists were 21.____________ (amaze) to discover a group of about 60 million icefish nests on the ocean floor. Before this, the 22.____________ (large) group of icefish nests that had ever been found includes less than 60 nests. Lilian Boehringer, a research student, was the first 23.____________ (discover) the nests. “They were everywhere，” she told The New York Times. The researchers used a special device called OFOBS to make two more four-hour “dives”， 24.____________ (try) to discover the limits of the nesting area. The nests scientists found were in the shape of 25.____________ circle. Each nest held about 1,700 eggs. Usually, Weddell seals (海豹) 26.____________ (spot) in the waters above the nesting site. Trackers 27.____________ (fix) on some Weddell seals show that they dive all the way to the sea floor. The team placed a camera on the sea floor before leaving, 28.____________ will take a picture of the nests in the area 29.____________ (two) a day for the next two years. They hope the pictures from this camera will help them learn more about the lives of the icefish. 语篇解读：本文是一篇说明文。文章介绍了科学家在南极海底探险时发现了比以往任何时候都多的鱼巢。 20．than　考查比较连词。根据前文比较级larger可知，此处应用比较连词than。 21．amazed　考查形容词。根据前文scientists were可知，此处应用其以-ed结尾的形容词作表语，修饰人。故填amazed。 22．largest　考查形容词最高级。根据句意和定冠词the可知，此处应用形容词最高级作定语。故填largest。 23．to discover　考查非谓语动词。名词前有序数词first等修饰时，要用动词不定式作后置定语。故填to discover。 24．trying　考查非谓语动词。此处为非谓语，动词try和主语之间是主动关系，故用其现在分词作状语。故填trying。 25．a　考查冠词。可数名词circle为泛指概念，应用不定冠词限定，且其发音以辅音音素开头。故填a。 26．are spotted　考查时态、语态和主谓一致。根据句意和时间状语Usually可知，此处描述客观事实，用一般现在时；谓语动词spot和主语之间是被动关系，故用一般现在时的被动语态；主语为复数，故填are spotted。 27．fixed　考查非谓语动词。动词fix和名词Trackers之间是被动关系，故用其过去分词作后置定语。故填fixed。 28．which　考查定语从句。此处引导非限制性定语从句，先行词为camera，指代事物，应用关系代词which引导，which在从句中作主语。 29．twice　考查副词。根据句意及a day可知，此处应用表示次数的副词twice作状语。 学科网（北京）股份有限公司 $