【閱讀下文，回答第21至24題】
May 18 is International Day for Women in Maritime, which recognizes the importance of women in the ocean transport industry. The theme for 2025 was "An Ocean of Opportunities for Women." In Taiwan, women represent only 4% of seafarers (航海人員). ___21___ the 260 women seafarers, many have proved that seafaring can be a rewarding career. One woman who shows the way is Huang Chao-ling (黃昭玲). Huang, who was a captain, is Taiwan's first and only female harbor pilot. As a harbor pilot, she guides ships safely in and out of the port, which is a ___22___ job that requires taking risks, such as climbing onto a moving ship in big waves. Another front-runner is Lin Chia-ling (林嘉玲), Taiwan's first woman oil tanker captain. Lin's job is to ensure reliable delivery of oil to all ports in Taiwan, ___23___ the weather is terrible. Huang and Lin share a hard career path, given that women seafarers face various challenges, including insufficient onboard facilities. Today, the maritime industry is working to create a gender-friendly workplace ___24___. Such efforts are seeing results, with the number of Taiwanese women captains standing at 22 in 2024, up from 6 about ten years ago.

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(D) Opposite