Directions: In this section of the test, there are ten paragraphs. Each of the paragraphs is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Spell out the missing letters of the word on your Answer Sheet.
India's successively launching of its first nuclear submarine and aircraft carrier shows New Delhi's upgraded naval capability and its strong drive to dominate the Indian Ocean, observers say. The 37,500-ton aircraft carrier INS Vikrant will enter the water on Monday at Kochi shipyard in southern India, four years after its keel was laid.
Launches highlight India's sea a______.
【正确答案】：clear
