Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 28 to 34. There are two basic types of glaciers, those that flow outward in all directions with little regard for any underlying terrain and those that are confined by terrain to a particular path. The first category of glaciers includes those massive blankets that cover whole continents, appropriately called ice sheets. There must be over 50,000...
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 28 to 34.
There are two basic types of glaciers, those that flow outward in all directions with little regard for any underlying terrain and those that are confined by terrain to a particular path.
The first category of glaciers includes those massive blankets that cover whole continents, appropriately called ice sheets. There must be over 50,000 square kilometers of land covered with ice for the glacier to qualify as an ice sheet. When portions of an ice sheet spread out over the ocean, they form ice shelves.
About 20,000 years ago the Cordilleran Ice Sheet covered nearly all the mountains in southern Alaska, western Canada, and the western United States. It was about 3 kilometers deep at its thickest point in northern Alberta. Now there are only two sheets left on Earth, those covering Greenland and Antarctica.
Any domelike body of ice that also flows out in all directions but covers less than 50,000 square kilometers is called an ice cap. Although ice caps are rare nowadays, there are a number in northeastern Canada, on Baffin Island, and on the Queen Elizabeth Islands.
The second category of glaciers includes those of a variety of shapes and sizes generally called mountain or alpine glaciers. Mountain glaciers are typically identified by the landform that controls their flow. One form of mountain glacier that resembles an ice cap in that it flows outward in several directions is called an ice field. The difference between an ice field and an ice cap is subtle. Essentially, the flow of an ice field is somewhat controlled by surrounding terrain and thus does not have the domelike shape of a cap. There are several ice fields in the Wrangell, St. Elias, and Chugach mountains of Alaska and northern British Columbia.
Less spectacular than large ice fields are the most common types of mountain glaciers : the cirque and valley glaciers. Cirque glaciers are found in depressions in the surface of the land and have a characteristic circular shape. The ice of valley glaciers, bound by terrain, flows down valleys, curves around their comers, and falls over cliffs.
It can be inferred that ice sheets are so named for which of the following reasons?
A. They are confined to mountain valleys.
B. They cover large areas of land.
C. They are thicker in some areas than in others.
D. They have a characteristic circular shape.
1. Ice-skate => Ice-skating is the activity of moving around on ice wearing ice skates.
2. Our teacher told => said that the sun always rises in the east.
3. Much => Many of the butter eaten in Britain comes of New Zealand.
4. Many Vietnamese people prepare for the holiday by pay => paying their debts and cleaningtheir homes.
5. The house was desgin => designed by Mike's father and built by Mike .
6. |The boys promised that they won't => wouldn't make so much noise the following day.
7. I would like to thank everybody about => for coming along today.
8. They are making the final preparations of => for next week's Christmas parade.
9. The meeting will be hold => held in the community center.
10. At => In the mid - nineteenth century, the first Christmas card was designed.
11. Vietnam's New Year is officially know => known as Tet Nguyen Dan, or Tet.
12. Basil explained me that he was going to visit his aunt the next day.
13. I had the gardener planted => plant some trees.
14. I have to fetch the childen at school at 4 o' clock.
15. He has repeatedly urged the government doing => to do something about this.
16. If you are interested on => in helping, just show up on Satuday.
Câu 2 told=said mà, sửa kiểu vậy có nghĩa j đâu