Read the passage and answer the questions. The Great Lakes are the largest group of freshwater lakes in the world. All five are located on the border between Canada and the United States. The names of the Great Lakes are Erie, Ontario, Michigan, Huron, and Superior. The smallest of the group is Lake Ontario while Lake Superior is the largest. Lakes Ontario, Erie, Huron, and Superior are shared by Canada and the United States. Lake Michigan, however, lies entirely within the borders of the United States. Geologically speaking, the Great Lakes are relatively young. They were formed about 10,000 years ago due to the action of receding glaciers. At the time of their creation, massive glaciers - some several kilometers thick - were retreating as they melted and the last ice age came to an end. The great weight of the ice sheets gouged out enormous holes in parts of the land. Then, the melting ice turned into water and filled in the holes with water. In this way were the Great Lakes formed. The Great Lakes have a combined surface area of more than 240.000 square kilometers. There are also around 35,000 islands in the lakes, yet most of them are quite small. Lake Superior is the deepest at more than 400 meters in places. But most of the Great Lakes average less than 100 meters in depth. Due to their immense size, the Great lakes comprise around 2196 of the entire planet's supply of freshwater. All five of the lakes are connected by both rivers and channels that run between them. The entire system flows to the Atlantic Ocean by way of the St. Lawrence River in Canada. Together with the St. Lawrence River, the Great Lakes form the largest inland waterway in the world. As a result, millions of people live near the Great lakes. Among the major cities that lie alongside them are Chicago, Toronto, Detroit, Milwaukee, Cleveland, and Buffalo. Each year thousands of ships transport billions of dollars worth of goods through the numerous ports along the Great Lakes. This has transformed many port cities into major transportation centers in Canada and the United States. Question 35: What is this passage mostly about? A. The formation of the Great Lakes B. The citis around the Great Lakes C. The geography of the Great Lakes D. The sizes of the Great Lakes Question 36: Which of the Great Lakes is the biggest? A. Lake Huron B. Lake Superior C. Lake Erie D. Lake Ontario Question 37: In paragraph 2, the word "receding" is closest in meaning to ______. A. retreating B. removing C. revitalizing D. resulting Question 38: Which of the following is NOT mentioned as a cause of the formation of the Great Lakes? A. The end of the ice age B. The movement of glaciers C. The meeting of ice D. The falling of rain and snow Question 39: Which of the following is true regarding the islands in the Great Lakes? A. More than 240.000 have been identified. B. Some are more than 400 meters long. C. There are tens of thousands of them. D. Most of them are extremely large. Question 40In paragraph 2, the word "immense" is closest in meaning to _______. A. variable B. huge C. considerate D. relative Question 41: Why does the author talk about the St. Lawrence River? A. To point out that it flows entirely through Canada B. To state that there are many channels connecting it to the Great Lakes C. To mention that it connects the Great Lakes with the Atlantic Ocean D. To claim that it is too narrow for some ships to sail on Question 42: According to the passage, which is true about the port cities that are beside the Great Lakes? A. All of them have increasing populations. B. The same kinds of good are transportation centers. C. They serve as important transportation centers. D. Some of them are also manufacturing centers.