Passage 5 Questions 21 to 25 are based on the following passage. Charles Darwin was born on February 12, 1809, at Shrewsbury, England, the second son of Dr. Robert Darwin, an eminently successful physician. From his earliest youth, Darwin was passionate lover of the outdoors. As he himself said, "I was born a naturalist."Every aspect of nature intrigued him. He loved to collect to fish and hunt, and to read nature books School, consisting largely of the study of the classics, bored him intolerably. Before he turned seventeen years old, his father sent him to the University of Edinburgh to study medicine. But medicine terrified Charles, and he continued to devote much of his time to the study of nature. When it became clear that he did not want to become a physician, his father sent him early in 1828 to Cambridge to study theology. This seemed a reasonable choice, since virtually all the naturalists in England at that time were ministers, as were the professors at Cambridge who taught botany and geology. Darwin's letters and biographical notes show that at Cambridge he devoted more time to collecting beetles, discussing botany and geology with his professors, and hunting and riding with similarly inclined friends than to his studies. Yet he did well in his examinations, and when he took his B.A. in 1831 he stood tenth on the list of nonhonors students. More importantly, when Darwin had completed his Cambridge years he was an accomplished young naturalist. Immediately upon finishing his studies, Darwin received an invitation to join The Beagle as naturalist and companion of Captain Robert FitzRoy, who had been commissioned to survey the coasts of Patagonia, Tierra del Fuego, Chile, and Peru to provide information for making better charts. The voyage was to be completed within two or three years but actually lasted five. The Beagle left Plymouth on December 27, 1831, when Darwin was twenty-two years old, and returned to England on October 2, 1836. Darwin used these five years to their fullest extent. In his Journal of Researches, he tells about all the places he visited-volcanic and coral islands, tropical forests in Brazil, the vast pampas of Patagonia, a crossing of the Andes from Chile to Tucuman in Argentina, and much, much more. Every day brought unforgettable new experiences, a valuable background for his life's work.He collected specimens from widely different groups of organisms, he dug out important fossils in Patagonia, he devoted much of his time to geology, but most of all he observed aspects of nature and asked himself many questions as to the how and why of natural processes. He asked "why" questions not only about geological features and animal life, but also about political and social situations.And it was his ability to ask profound questions and his perseverance in trying to answer them that would eventually make Darwin a great scientist.  The Beagle was commissioned to gather information on____

Passage 5 Questions 21 to 25 are based on the following passage. Charles Darwin was born on February 12, 1809, at Shrewsbury, England, the second son of Dr. Robert Darwin, an eminently successful physician. From his earliest youth, Darwin was passionate lover of the outdoors. As he himself said, "I was born a naturalist."Every aspect of nature intrigued him. He loved to collect to fish and hunt, and to read nature books School, consisting largely of the study of the classics, bored him intolerably. Before he turned seventeen years old, his father sent him to the University of Edinburgh to study medicine. But medicine terrified Charles, and he continued to devote much of his time to the study of nature. When it became clear that he did not want to become a physician, his father sent him early in 1828 to Cambridge to study theology. This seemed a reasonable choice, since virtually all the naturalists in England at that time were ministers, as were the professors at Cambridge who taught botany and geology. Darwin's letters and biographical notes show that at Cambridge he devoted more time to collecting beetles, discussing botany and geology with his professors, and hunting and riding with similarly inclined friends than to his studies. Yet he did well in his examinations, and when he took his B.A. in 1831 he stood tenth on the list of nonhonors students. More importantly, when Darwin had completed his Cambridge years he was an accomplished young naturalist. Immediately upon finishing his studies, Darwin received an invitation to join The Beagle as naturalist and companion of Captain Robert FitzRoy, who had been commissioned to survey the coasts of Patagonia, Tierra del Fuego, Chile, and Peru to provide information for making better charts. The voyage was to be completed within two or three years but actually lasted five. The Beagle left Plymouth on December 27, 1831, when Darwin was twenty-two years old, and returned to England on October 2, 1836. Darwin used these five years to their fullest extent. In his Journal of Researches, he tells about all the places he visited-volcanic and coral islands, tropical forests in Brazil, the vast pampas of Patagonia, a crossing of the Andes from Chile to Tucuman in Argentina, and much, much more. Every day brought unforgettable new experiences, a valuable background for his life's work.He collected specimens from widely different groups of organisms, he dug out important fossils in Patagonia, he devoted much of his time to geology, but most of all he observed aspects of nature and asked himself many questions as to the how and why of natural processes. He asked "why" questions not only about geological features and animal life, but also about political and social situations.And it was his ability to ask profound questions and his perseverance in trying to answer them that would eventually make Darwin a great scientist.  Journal of Researches is probably____

Passage 5 Questions 21 to 25 are based on the following passage. Charles Darwin was born on February 12, 1809, at Shrewsbury, England, the second son of Dr. Robert Darwin, an eminently successful physician. From his earliest youth, Darwin was passionate lover of the outdoors. As he himself said, "I was born a naturalist."Every aspect of nature intrigued him. He loved to collect to fish and hunt, and to read nature books School, consisting largely of the study of the classics, bored him intolerably. Before he turned seventeen years old, his father sent him to the University of Edinburgh to study medicine. But medicine terrified Charles, and he continued to devote much of his time to the study of nature. When it became clear that he did not want to become a physician, his father sent him early in 1828 to Cambridge to study theology. This seemed a reasonable choice, since virtually all the naturalists in England at that time were ministers, as were the professors at Cambridge who taught botany and geology. Darwin's letters and biographical notes show that at Cambridge he devoted more time to collecting beetles, discussing botany and geology with his professors, and hunting and riding with similarly inclined friends than to his studies. Yet he did well in his examinations, and when he took his B.A. in 1831 he stood tenth on the list of nonhonors students. More importantly, when Darwin had completed his Cambridge years he was an accomplished young naturalist. Immediately upon finishing his studies, Darwin received an invitation to join The Beagle as naturalist and companion of Captain Robert FitzRoy, who had been commissioned to survey the coasts of Patagonia, Tierra del Fuego, Chile, and Peru to provide information for making better charts. The voyage was to be completed within two or three years but actually lasted five. The Beagle left Plymouth on December 27, 1831, when Darwin was twenty-two years old, and returned to England on October 2, 1836. Darwin used these five years to their fullest extent. In his Journal of Researches, he tells about all the places he visited-volcanic and coral islands, tropical forests in Brazil, the vast pampas of Patagonia, a crossing of the Andes from Chile to Tucuman in Argentina, and much, much more. Every day brought unforgettable new experiences, a valuable background for his life's work.He collected specimens from widely different groups of organisms, he dug out important fossils in Patagonia, he devoted much of his time to geology, but most of all he observed aspects of nature and asked himself many questions as to the how and why of natural processes. He asked "why" questions not only about geological features and animal life, but also about political and social situations.And it was his ability to ask profound questions and his perseverance in trying to answer them that would eventually make Darwin a great scientist.  The passage mainly describes Darwin's____

Passage 6 Questions 26 to 30 are based on the following passage. Yellowstone National Park, established by the U.S. Congress as a national park on March 1, 1872, is located primarily in the U.S. state of Wyoming, though it also extends into Montana and Idaho. The park was the first of its kind, and is known for its wildlife and its many geothermal地热的) features, especially Old Faithful Geyser, one of the most popular features in the park. It has many types of ecosystems, but the subalpine(亚高山带的)forest is dominant American Indians have lived in the Yellowstone region for at least 11,000 years. The region was bypassed during the Lewis and Clark Expedition in the early 1800s. Aside from visits by mountain men during the early to mid 1800s, organized exploration did not begin until the late 1860s. The U.S. Army was commissioned to oversee the park just after its establishment. In 1917, administration of the park was transferred to the National Park Service, which had been created the previous year. Hundreds of structures have been built and are protected for their architectural and historical significance, and researchers have examined more than 1,000 archaeological sites. Yellowstone National Park spans an area of 3,468 square miles, comprising lakes, canyons, rivers and mountain ranges. Yellowstone Lake is one of the largest high-altitude lakes in North America and is centered over the Yellowstone Caldera, the largest super-volcano- on the continent. The caldera is considered an active volcano; it has erupted with tremendous force several times in the last two million years. Half of the world's geothermal features are in Yellowstone, fueled by ongoing volcanic activities. Lava flows and rocks from volcanic eruptions cover most of the land area of Yellowstone. The park is the centerpiece of the Greater Yellowstone Ecosystem, the largest remaining nearly-intact ecosystem in the Earth's northern temperate zone. Hundreds of species of mammals birds, fish and reptiles have been documented, including several that are either endangered or threatened. There are almost 60 species of mammals in the park. Apart from wildlife, there are 1, 700 species of trees and other plants native to the park. Another 170 species are considered to be exotic species and are non-native. As one of the most popular national parks in the United States, Yellowstone provides numerous recreational opportunities including hiking, camping, boating,fishing and sightseeing. Paved roads provide close access to the major geothermal areas as well as some of the lakes and waterfalls. Since the mid 1960s, at least 2 million tourists have visited the park almost every year. Nine hotels and lodges, with total of 2,238 rooms and cabins, are available to tourists from all over the world. Hundreds of employees work either permanently or seasonally for the National Park Service.  The Old Faithful Geyser is probably____

Passage 6 Questions 26 to 30 are based on the following passage. Yellowstone National Park, established by the U.S. Congress as a national park on March 1, 1872, is located primarily in the U.S. state of Wyoming, though it also extends into Montana and Idaho. The park was the first of its kind, and is known for its wildlife and its many geothermal地热的) features, especially Old Faithful Geyser, one of the most popular features in the park. It has many types of ecosystems, but the subalpine(亚高山带的)forest is dominant American Indians have lived in the Yellowstone region for at least 11,000 years. The region was bypassed during the Lewis and Clark Expedition in the early 1800s. Aside from visits by mountain men during the early to mid 1800s, organized exploration did not begin until the late 1860s. The U.S. Army was commissioned to oversee the park just after its establishment. In 1917, administration of the park was transferred to the National Park Service, which had been created the previous year. Hundreds of structures have been built and are protected for their architectural and historical significance, and researchers have examined more than 1,000 archaeological sites. Yellowstone National Park spans an area of 3,468 square miles, comprising lakes, canyons, rivers and mountain ranges. Yellowstone Lake is one of the largest high-altitude lakes in North America and is centered over the Yellowstone Caldera, the largest super-volcano- on the continent. The caldera is considered an active volcano; it has erupted with tremendous force several times in the last two million years. Half of the world's geothermal features are in Yellowstone, fueled by ongoing volcanic activities. Lava flows and rocks from volcanic eruptions cover most of the land area of Yellowstone. The park is the centerpiece of the Greater Yellowstone Ecosystem, the largest remaining nearly-intact ecosystem in the Earth's northern temperate zone. Hundreds of species of mammals birds, fish and reptiles have been documented, including several that are either endangered or threatened. There are almost 60 species of mammals in the park. Apart from wildlife, there are 1, 700 species of trees and other plants native to the park. Another 170 species are considered to be exotic species and are non-native. As one of the most popular national parks in the United States, Yellowstone provides numerous recreational opportunities including hiking, camping, boating,fishing and sightseeing. Paved roads provide close access to the major geothermal areas as well as some of the lakes and waterfalls. Since the mid 1960s, at least 2 million tourists have visited the park almost every year. Nine hotels and lodges, with total of 2,238 rooms and cabins, are available to tourists from all over the world. Hundreds of employees work either permanently or seasonally for the National Park Service.  The Yellowstone region was not explored until____

Passage 6 Questions 26 to 30 are based on the following passage. Yellowstone National Park, established by the U.S. Congress as a national park on March 1, 1872, is located primarily in the U.S. state of Wyoming, though it also extends into Montana and Idaho. The park was the first of its kind, and is known for its wildlife and its many geothermal地热的) features, especially Old Faithful Geyser, one of the most popular features in the park. It has many types of ecosystems, but the subalpine(亚高山带的)forest is dominant American Indians have lived in the Yellowstone region for at least 11,000 years. The region was bypassed during the Lewis and Clark Expedition in the early 1800s. Aside from visits by mountain men during the early to mid 1800s, organized exploration did not begin until the late 1860s. The U.S. Army was commissioned to oversee the park just after its establishment. In 1917, administration of the park was transferred to the National Park Service, which had been created the previous year. Hundreds of structures have been built and are protected for their architectural and historical significance, and researchers have examined more than 1,000 archaeological sites. Yellowstone National Park spans an area of 3,468 square miles, comprising lakes, canyons, rivers and mountain ranges. Yellowstone Lake is one of the largest high-altitude lakes in North America and is centered over the Yellowstone Caldera, the largest super-volcano- on the continent. The caldera is considered an active volcano; it has erupted with tremendous force several times in the last two million years. Half of the world's geothermal features are in Yellowstone, fueled by ongoing volcanic activities. Lava flows and rocks from volcanic eruptions cover most of the land area of Yellowstone. The park is the centerpiece of the Greater Yellowstone Ecosystem, the largest remaining nearly-intact ecosystem in the Earth's northern temperate zone. Hundreds of species of mammals birds, fish and reptiles have been documented, including several that are either endangered or threatened. There are almost 60 species of mammals in the park. Apart from wildlife, there are 1, 700 species of trees and other plants native to the park. Another 170 species are considered to be exotic species and are non-native. As one of the most popular national parks in the United States, Yellowstone provides numerous recreational opportunities including hiking, camping, boating,fishing and sightseeing. Paved roads provide close access to the major geothermal areas as well as some of the lakes and waterfalls. Since the mid 1960s, at least 2 million tourists have visited the park almost every year. Nine hotels and lodges, with total of 2,238 rooms and cabins, are available to tourists from all over the world. Hundreds of employees work either permanently or seasonally for the National Park Service.  The responsibility for watching over the park was initially shouldered by____

Passage 6 Questions 26 to 30 are based on the following passage. Yellowstone National Park, established by the U.S. Congress as a national park on March 1, 1872, is located primarily in the U.S. state of Wyoming, though it also extends into Montana and Idaho. The park was the first of its kind, and is known for its wildlife and its many geothermal地热的) features, especially Old Faithful Geyser, one of the most popular features in the park. It has many types of ecosystems, but the subalpine(亚高山带的)forest is dominant American Indians have lived in the Yellowstone region for at least 11,000 years. The region was bypassed during the Lewis and Clark Expedition in the early 1800s. Aside from visits by mountain men during the early to mid 1800s, organized exploration did not begin until the late 1860s. The U.S. Army was commissioned to oversee the park just after its establishment. In 1917, administration of the park was transferred to the National Park Service, which had been created the previous year. Hundreds of structures have been built and are protected for their architectural and historical significance, and researchers have examined more than 1,000 archaeological sites. Yellowstone National Park spans an area of 3,468 square miles, comprising lakes, canyons, rivers and mountain ranges. Yellowstone Lake is one of the largest high-altitude lakes in North America and is centered over the Yellowstone Caldera, the largest super-volcano- on the continent. The caldera is considered an active volcano; it has erupted with tremendous force several times in the last two million years. Half of the world's geothermal features are in Yellowstone, fueled by ongoing volcanic activities. Lava flows and rocks from volcanic eruptions cover most of the land area of Yellowstone. The park is the centerpiece of the Greater Yellowstone Ecosystem, the largest remaining nearly-intact ecosystem in the Earth's northern temperate zone. Hundreds of species of mammals birds, fish and reptiles have been documented, including several that are either endangered or threatened. There are almost 60 species of mammals in the park. Apart from wildlife, there are 1, 700 species of trees and other plants native to the park. Another 170 species are considered to be exotic species and are non-native. As one of the most popular national parks in the United States, Yellowstone provides numerous recreational opportunities including hiking, camping, boating,fishing and sightseeing. Paved roads provide close access to the major geothermal areas as well as some of the lakes and waterfalls. Since the mid 1960s, at least 2 million tourists have visited the park almost every year. Nine hotels and lodges, with total of 2,238 rooms and cabins, are available to tourists from all over the world. Hundreds of employees work either permanently or seasonally for the National Park Service.  Yellowstone National Park is rich in geothermal features because of____

Passage 6 Questions 26 to 30 are based on the following passage. Yellowstone National Park, established by the U.S. Congress as a national park on March 1, 1872, is located primarily in the U.S. state of Wyoming, though it also extends into Montana and Idaho. The park was the first of its kind, and is known for its wildlife and its many geothermal地热的) features, especially Old Faithful Geyser, one of the most popular features in the park. It has many types of ecosystems, but the subalpine(亚高山带的)forest is dominant American Indians have lived in the Yellowstone region for at least 11,000 years. The region was bypassed during the Lewis and Clark Expedition in the early 1800s. Aside from visits by mountain men during the early to mid 1800s, organized exploration did not begin until the late 1860s. The U.S. Army was commissioned to oversee the park just after its establishment. In 1917, administration of the park was transferred to the National Park Service, which had been created the previous year. Hundreds of structures have been built and are protected for their architectural and historical significance, and researchers have examined more than 1,000 archaeological sites. Yellowstone National Park spans an area of 3,468 square miles, comprising lakes, canyons, rivers and mountain ranges. Yellowstone Lake is one of the largest high-altitude lakes in North America and is centered over the Yellowstone Caldera, the largest super-volcano- on the continent. The caldera is considered an active volcano; it has erupted with tremendous force several times in the last two million years. Half of the world's geothermal features are in Yellowstone, fueled by ongoing volcanic activities. Lava flows and rocks from volcanic eruptions cover most of the land area of Yellowstone. The park is the centerpiece of the Greater Yellowstone Ecosystem, the largest remaining nearly-intact ecosystem in the Earth's northern temperate zone. Hundreds of species of mammals birds, fish and reptiles have been documented, including several that are either endangered or threatened. There are almost 60 species of mammals in the park. Apart from wildlife, there are 1, 700 species of trees and other plants native to the park. Another 170 species are considered to be exotic species and are non-native. As one of the most popular national parks in the United States, Yellowstone provides numerous recreational opportunities including hiking, camping, boating,fishing and sightseeing. Paved roads provide close access to the major geothermal areas as well as some of the lakes and waterfalls. Since the mid 1960s, at least 2 million tourists have visited the park almost every year. Nine hotels and lodges, with total of 2,238 rooms and cabins, are available to tourists from all over the world. Hundreds of employees work either permanently or seasonally for the National Park Service.  The establishment of the park makes it possible that____

请用括号单词的恰当形式填空(regular)The____ of English spelling means that it is easy to make mistakes.

请用括号单词的恰当形式填空(utter)You couldn't imagine what a(n)____stupid thing he has done!