Read the following passage and mark the letter A, B, C or D on your answer sheet to choose the best answer for each of the question from 43- 50
The ocean bottom - a region nearly 2.5 times greater than the total land area of Earth - is a vast frontier that even today is largely unexplored and uncharted. Until about a century ago, the deep-ocean floor was completely inaccessible, hidden beneath waters averaging over 3,600 meters deep. Totally without light and subjected to intense pressures hundreds of times greater than at the Earth’s surface, the deep-ocean bottom is a hostile environment to humans, in some ways as forbidding and remote as the void of outer space.
Although researchers have taken samples of deep-ocean rocks and sediments for over a century, the first detailed global investigation of the ocean bottom did not actually start until 1968, with the beginning of the National Science Foundation’s Deep Sea Drilling Project (DSDP). Using techniques first developed for the offshore oil and gas industry, the DSDP’s drill ship, the Glomar Challenger, was able to maintain a steady position on the ocean’s surface and drill in very deep waters, extracting samples of sediments and rock from the ocean floor.
The Glomar Challenger completed 96 voyages in a 15-year research program that ended in November 1983. During this time, the vessel logged 600,000 kilometers and took almost 20,000 core samples of seabed sediments and rocks at 624 drilling sites around the world.. The Glomar Challenger’s core samples have allowed geologists to reconstruct what the planet looked like hundreds of millions of years ago and to calculate what it will probably look like millions of years in the future. Today, largely on the strength of evidence gathered during the Glomar Challenger’s voyages, nearly all earth scientists agree on the theories of plate tectonics and continental drift that explain many of the geological processes that shape the Earth.
The cores of sediment drilled by the Glomar Challenger have also yielded information critical to understanding the world’s past climates. Deep-ocean sediments provide a climatic record stretching back hundreds of millions of years, because they are largely isolated from the mechanical erosion and the intense chemical and biological activity that rapidly destroy much land-based evidence of past climates. This record has already provided insights into the patterns and causes of past climatic change - information that may be used to predict future climates.
The Deep Sea Drilling Project was significant because it was ______.
A. an attempt to find new sources of oil and gas
B. the first extensive exploration of the ocean bottom
C. composed of geologists from all over the world
D. funded entirely by the gas and oil industry
Giải bởi qa.haylamdo.com
Đáp án B
Dự án khoan biển sâu rất quan trọng vì đó là:
A. một nỗ lực để tìm nguồn dầu khí mới
B. thăm dò mở rộng đầu tiên của đáy đại dương
C. bao gồm các nhà địa chất từ khắp nơi trên thế giới
D. được tài trợ hoàn toàn bởi ngành công nghiệp dầu khí
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
I see John’s boasting again. I’ve heard him telling everyone he’s the best tennis player in the County. He is _______
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
_______ your effort and talent, we wonder if you can work full time for us.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Many Indian men said that it was unwise to _______ in their wives.
Choose A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.
If drivers do not observe the traffic regulations, they will stop and get fined.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
What a stupid thing to do. Can you imagine anyone _______ so stupid?
Choose A, B, C, or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in the following questions.
In that organization, they put emphasis on mutual aid and cooperation
Choose A, B, C, or D to indicate the word that differs from the other three in the position of primary stress in each of the following questions.
Choose A, B, C, or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
Nothing could efface the people’s memory of their former leader’s cruelty although many years had elapsed.
Choose A, B, C, or D to indicate the word that differs from the other three in the position of primary stress in each of the following questions.
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
Do you realize that I would have been given that job if you had not been silent?
Choose A, B, C, or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
The spy used a fictitious name while dealing with the enemy.
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
For fear of waking up the family, Trung tiptoed upstairs.
Choose A, B, C, or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in the following questions.
His new million-dollar luxury car is certainly an ostentatious display of his wealth.
Choose A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.
Card Anderson discovered two atomic particles that he identified while studied cosmic rays
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The chairman requested that _______.
