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.Quite different from storm surges are the giant sea waves called tsunamis, which derive their name from the Japanese expression for “high water in a harbor”. These waves are also referred to by the general public as tidal waves, although they have relatively little to do with tides. Scientists often refer to them as seismic sea waves, far more appropriate in the result they do from undersea seismic activity.Tsunamis are caused when the sea bottom suddenly moves. during an underwater earthquake or volcano, for example, and the water above the moving earth is suddenly displaced. This sudden shift of water sets off a series of waves. These waves can travel great distances at speeds close to 700 kilometers per hour. In the open ocean, tsunamis have little noticeable amplitude, often no more than one or two meters. It is when they hit the shallow water near the coast that they increase in height, possibly up to 40 meters.Tsunamis often occur in the Pacific because the Pacific is an area of heavy seismic activity. Two areas of the Pacific well accustomed to the threat of tsunamis are Japan and Hawaii. Because the seismic activity that causes tsunamis in Japan often occurs on the ocean bottom quite close to the islands, the tsunamis that hit Japan often come with little warning and can, therefore, prove disastrous. Most of the tsunamis that hit the Hawaii Islands, however, originate thousands of miles away near the coast of Alaska, so these tsunamis have a much greater distance to travel and the inhabitants of Hawaii generally have time for warning of their imminent arrival.Tsunamis are certainly not limited to Japan and Hawaii. ln 1755, Europe experienced a calamitous tsunami, when movement near the Azores caused a massive tsunami to sweep onto the Portuguese coast and flood the heavily populated area around Lisbon. The greatest tsunami on record occurred on the other side of the world in 1883 when the Krakatoa volcano underwent a massive explosion, sending waves more than 30 meters high onto nearby Indonesian islands; the tsunami from this volcano actually traveled around the world and was witnessed as far away as the English Channel.
Câu 1: The paragraph preceding this paragraph most probably discusses______
A. underwater earthquakes
B. storm surges
C. tides
D. tidal waves
Câu 2: According to the passage, all of the following are true about tidal waves EXCEPT that_____
A. they are caused by sudden changes in high and low tides
B. they refer to the same phenomenon as seismic sea waves
C. they are the same as tsunamis
D. this terminology is not used by the scientific community
Câu 3: The word “displaced” in the second paragraph is closest in meaning to______
A. located
B. filtered
C. moved
D. not pleased
Câu 4: It can be inferred from the passage that tsunamis_____
A. are often identified by ships on the ocean
B. generally reach heights greater than 40 meters
C. are far more dangerous on the coast than in the open ocean
D. cause severe damage in the middle of the ocean
Câu 5: As used in the passage, water that is “shallow” isn‘t_______
A. coastal
B. deep
C. clear
D. tidal
Câu 6: A main difference between tsunamis in Japan and in Hawaii is that tsunamis in Japan are more likely to______
A. come from greater distances
B. be less of a problem
C. originate in Alaska
D. arrive with little warning
Câu 7: The possessive “their” in the third paragraph refers to_______
A. these tsunamis
B. the inhabitants of Hawaii
C. the Hawaii islands
D. thousands of miles
Câu 8: A “calamitous” tsunami in the last paragraph is one that is______
A. at fault
B. expected
C. disastrous
D. extremely calm
Câu 9: From the expression "on record“ in the last paragraph, it can be inferred the tsunami that accompanied the Krakatoa volcano______
A. might be the greatest tsunami ever
B. was not as strong as the tsunami in Lisbon
C. was filmed as was happening
D. occurred before efficient records were kept
Câu 10: The passage suggested the tsunami resulted from the Krakatoa volcano______
A. was unobserved outside the Indonesian islands
B. resulted in little damage
C. caused volcanic explosions in the English Channel
D. was far more destructive close to the source than far away
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