托福考题阅读理解样题模拟练习
宝剑锋从磨砺出,梅花香自苦寒来。以下是小编为大家搜索整理的托福考题阅读理解样题模拟练习,希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!
PASSAGE 38
During most of their lives, surge glaciers behave like normal glaciers, traveling perhaps only a couple of inches per day. However, at intervals of 10 to 100 years, these glaciers move forward up to 100 times faster than usual. The surge often progresses along a glacier like a great wave, proceeding from one section to another. Subglacial streams of meltwater might act as a lubricant, allowing the glacier to flow rapidly toward the sea. The increasing water pressure under the glacier might lift it off its bed, overcoming the friction between ice and rock, thus freeing the glacier, which rapidly sliders downhill. Surge glaciers also might be influenced by the climate, volcanic heat, or earthquakes. However, many of these glaciers exist in the same area as normal glaciers, often almost side by side.
Some 800 years ago, Alaska's Hubbard Glacier advanced toward the sea, retreated, and advanced again 500 years later. Since 1895, this seventy-mile-long river of ice has been flowing steadily toward the Gulf of Alaska at a rate of approximately 200 feet per year. In June 1986, however, the glacier surged ahead as much as 47 feet a day. Meanwhile, a western tributary, called Valerie Glacier, advanced up to 112 feet a day. Hubbard's surge closed off Russell Fiord with a formidable ice dam, some 2,500 feet wide and up to 800 feet high, whose caged waters threatened the town of Yakutat to the south.
About 20 similar glaciers around the Gulf of Alaska are heading toward the sea. If enough surge glaciers reach the ocean and raise sea levels, west Antarctic ice shelves could rise off the seafloor and become adrift. A flood of ice would then surge into the Southern Sea. With the continued rise in sea level, more ice would plunge into the ocean, causing sea levels to rise even higher, which in turn would release more ice and set in motion a vicious cycle. The additional sea ice floating toward the tropics would increase Earth's albedo and lower global temperatures, perhaps enough to initiate a new ice age. This situation appears to have occurred at the end of the last warm interglacial (the time between glacations), called the Sangamon, when sea ice cooled the ocean dramatically, spawning the beginning of the Ice Age.
1. What is the main topic of the passage ?
(A) The classification of different types of surge glaciers
(B) The causes and consequences of surge glaciers
(C) The definition of a surge glacier
(D) The history of a particular surge glacier
2. The word "intervals" in line 2 is closest in meaning to
(A) records
(B) speeds
(C) distances
(D) periods
3. The author compares the surging motion of a surge glacier to the movement of a
(A) fish
(B) wave
(C) machine
(D) boat
4. Which of the following does the author mention as a possible cause of surging glaciers?
(A) The decline in sea levels
(B) The occurrence of unusually large ocean waves
(C) The shifting Antarctic ice shelves
(D) The pressure of meltwater underneath the glacier
5. The word "freeing" in line 7 is closest in meaning to
(A) pushing
(B) releasing
(C) strengthening
(D) draining
6. According to the passage , the Hubbard Glacier
(A) moves more often than the Valerie Glacier
(B) began movement toward the sea in 1895
(C) is 800 feet wide
(D) has moved as fast as 47 feet per day
7. Yakutat is the name of
(A) an Alaskan town
(B) the last ice age
(C) a surge glacier
(D) an Antarctic ice shelf
8. The word "plunge" in line 22 is closest in meaning to
(A) drop
(B) extend
(C) melt
(D) drift
9. The term "vicious cycle" in line 24 refers to the
(A) movement pattern of surge glaciers
(B) effect surge glaciers could have on the temperature of tropical areas
(C) effect that repeated rising sea levels might have on glacial ice
(D) constant threat surge glaciers could pose to the Gulf of Alaska
10. The author provides a definition for which of the following terms?
(A) tributary (line 15)
(B) ice dam (line 16)
(C) albedo (line 25)
(D) interglacial(line 26)
11. Which of the following statements is supported by the passage ?
(A) The movement of surge glaciers can be prevented.
(B) The next ice age could be caused by surge glaciers.
(C) Surge glaciers help to support Antarctic ice shelves.
(D) Normal glaciers have little effect on Earth's climate.
参考答案:BDBDB DAACD B
-
2016年托福口语每道题最好用多少时间
第一部分(1-2题):准备时间15秒,答题时间45秒。如第1、2中的题目属于日常话题,这两道题本身难度比较小,所以特别需要注意的就是托福口语时间的分配问题,在这45秒钟里,一般用5~6秒完成topicsentence,接下来的40秒应以每一个detail或者example不超过3~4句话的`规律完成该...
-
2017年托福考试作文的高分模板
导语:TOEFL(TheTestofEnglishasaForeignLanguage,简称TOEFL),是由美国教育测验服务社(ETS)举办的英语能力考试,在考试中作文的`占分比例很大,今天小编就给大家整理了写作的高分模板,供各位考生参考~托福独立写作开头高分模板:Perhapsnoissueinthisworldisassignifican...
-
托福考试必备词汇
词汇,又称语汇,是一种语言里所有的(或特定范围的)词和固定短语的总和。例如汉语词汇、英语词汇或一般词汇、基本词汇、文言词汇、方言词汇等;还可以指某一个人或某一作品所用的词和固定短语的总和,以下是小编精心整理的托福考试必备词汇,欢迎阅读与收藏。托福考试词汇...
-
2016年托福口语考试注意事项
如果说托福考试其他部分都是以分钟为单位计时,那么口语就是唯一一个以秒计时的部分。六道口语题没有一道题的答题时间或者准备时间超过了1分钟。也就是说,在不超过60秒内,需要完成有关某主题的表述或者概括大意或者回答某问题,这的确非常难。实际上在口语考试中,经...