单选题
For those anxious about committing to a master's degree, there is the post-baccalaureate (学士后) certificate. Usually a four- to seven-course, self-contained certificate provides 25 academic study, or job-specific skills training, with a minimum 26 of time and money, and potentially significant payback. Nearly 51000 people earned the certificate in 2010—a 46 percent increase in five years. For men, having the certificate adds an average 25 percent in earnings; for women, who tend toward less 27 fields such as teaching and health care, the 28 is an average 13 percent, according to research from Georgetown University's Center on Education and the Workforce. About 3 percent of the workforce—or 4 million workers—have certificates. Certificates are market-driven. Colleges and universities, alert to evolving workplace requirements (and business opportunities in higher education), 29 gaps in education and training that appeal to adult students looking for a way to stand out or retool (重新安排) their careers. In some fields, especially health care, education, counseling, engineering and technology, certificates provide compulsory training for certain jobs or promotions, or make one 30 for higher pay scales. In other fields (arts management, interior design, public relations), the certificate shows interest and acquired knowledge in an area that is likely helpful in performing a job. Other certificates reflect 31 in areas so new, or quickly changing, that a demonstrated specialty can put a job applicant in front of the pack: homeland security, sports industry management. Some are purely 32 (African American studies), and some are training-specific (clinical research administration). If you can think of a specialty or job skill you want, there is probably a certificate, and a school-on-ground or online—that will qualify you in the subject. But it is a buyer-beware marketplace, education experts say. A certificate can run into the thousands of dollars (American University's 15-credit online digital media skills certificate costs $12000), so job 33 and schools should be researched before 34 on. A. academic B. boost C. distinguish D. eligible E. identify F. insisting G. investment H. involvement I. limitations J. prospects K. signing L. specialized M. specified N. strengths O. technical
【答案解析】形容词辨析题。根据句子结构可知，空格处应填形容词或动词，且该词能与后面的介词短语for higher pay scales搭配。句子的已知信息表明，在某些领域中，这类证书能够使参与者获益，由此可知，make one ______ for higher pay scales与前面提到的好处并列，因此eligible“合格的，有资格的”符合题意，指此类证书能使就业者获得加薪资格。
【答案解析】形容词辨析题。根据本句的结构Some are..., and some are...可以推断，空格所填词和后半句中的training-specific“专门培训型的”应形成对比，故空格处应填一个形容词。结合空格后面括号内给出的例子Artican American studies“非洲裔美国人研究”可知，academic“纯理论的”最符合题意。