[单项选择] Hunting for a job late last year, lawyer Gant Redmon stumbled across CareerBuider, a job database on the Internet. He searched it with no success but was attracted by the site’’s "personal search agent". It’’s an interactive feature that lets visitors key in job criteria such as location, title, and salary, then E-mails them when a matching position is posted in the database. Redmon chose the keywords legal, intellectual property, and Washington, D. C. Three’weeks later, he got his first notification of an opening. "I struck gold, "says Redmon, who E-mailed his resume to the employer and won a position as in-house counsel for a company. With thousands of career related sites on the Internet, finding promising openings can be time-consuming and inefficient. Search agents reduce the need for repeated visits to the databases. But although a search agent worked for Redmon, career experts see drawbacks. Narrowing your criteria, for example, may work against you: "Every time you answe
A. Personal search agents are indispensable to job hunters.
B. Some sites keep E-mailing job seekers to trace their demands.
C. Personal search agents are also helpful to those already employed.
D. Some agents stop sending information to people once they are employed.