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强化训练15 语法填空(一) (45分钟，100分) A The Pacific Ocean The Pacific Ocean is the __1__ (large) of the Earth's oceans, covering about 46% of the Earth's water surface and 32% of its total surface area. It extends __2__ the Arctic in the north to the Antarctica in the south, __3__(surround) by Asia and Australia in the west and the Americas in the east. The Pacific Ocean contains about 25,000 islands. The __4__ (major) of them are found south of the equator. __5__ water near the equator is less salty than that found in the midlatitudes (中纬度) for __6__ (abundance) equatorial precipitation (赤道降水) throughout the year. The surface circulation of Pacific waters is __7__ (general) clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere. The exploitation of the Pacific's mineral wealth is various, __8__ is influenced by the ocean's great depths. In shallow waters off the coasts of Australia and New Zealand, natural gas is produced, and pearls __9__ (harvest) along the coasts of Australia, Japan and the Philippines. One more thing worth __10__ (mention) is that the Pacific's greatest wealth is its fish. 1．______ 2.______ 3.______ 4.______ 5．______ 6.______ 7.______ 8.______ 9．______ 10.______ 【语篇解读】 本文是一篇说明文，主要介绍了世界上最大的大洋——太平洋。 | 
