What is the purpose of analyzing the speed of sound through the Pacific-Ocean（）
A: To determine whether the Earth’s temperature is going up.
B: To study the behavior of some sea animals.
C: To measure the depths of the ocean.
D: To measure the movement of waves on the ocean.
A: To determine whether the Earth’s temperature is going up.
B: To study the behavior of some sea animals.
C: To measure the depths of the ocean.
D: To measure the movement of waves on the ocean.
A
举一反三
- The Pacific Ocean is bigger than the Indian Ocean. A: The Pacific Ocean is bigger than the Indian Ocean. B: The Pacific Ocean is bigger than the Indian Ocean. C: / D: /
- 中国大学MOOC: The Pacific Ocean is bigger than the Indian Ocean.
- 中国大学MOOC: The USA is country bordered on the east by the Pacific Ocean and to the west by the Atlantic Ocean.
- The UK is located off the northwestern coast of Europe between __________ and ___________. A: Pacific Ocean B: Indian Ocean C: Atlantic Ocean D: North sea
- Which of the following statements is true（） A: The Indian Ocean comes before the Pacific and the Atlantic in size. B: The Indian Ocean is surround by four countries. C: Sri Lanka is the largest island in the Indian Ocean. D: Strong winds from the Indian Ocean bring heavy rains to the countries in southeast Asi
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New Zealand is in ______, halfway between the equator and the South Pole. A: the Southern Pacific Ocean B: the Northern Pacific Ocean C: the Atlantic Ocean D: the Indian Ocean
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Why did the U.S. Navy set up underwater microphones around the world in the 1960s A: To listen for changes in ocean structure. B: To listen for changes of ocean currents or volcanic activity. C: To make sure whether there was a giant squid deep in the ocean. D: To follow the track of the Soviet warships under water.
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the Pacific Ocean
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A _________ (一瞥) at a map of the Pacific Ocean reveals that there are many islands far out at sea that are actually volcanoes.
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The Pacific Ocean is to the east of China.