阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
A
Competition Judges Needed
Anyone with relevant knowledge or skills is encouraged to sign up to judge Sigma Xi's Student Research Showcase (SRS), an online science communication competition in which students compete for awards and recognition of outstanding virtual research presentations. The competition is open to high school, undergraduate, and graduate students and most worldwide research disciplines (学料) are represented across the following categories.
*agriculture, soil, and natural resources
*cell biology and biochemistry
*human behavioral and social sciences
*math and computer science
*physics and astronomy
Information for Judges
Professional researchers and science communicators from the above-listed disciplines are needed to evaluate and interact with contestants by posting comments and questions on presentation websites. Each judge assesses up to 10 websites where students submit their presentations containing mainly a research abstract and a slide presentation. Sigma Xi membership is preferred, but not required, to judge. Judging takes place from April 26 to May 10, 2022, allowing flexibility with each judge's personal schedule as no travel is required.
Click here to download the SRS Judges Manual for more information and judging criteria.
Information for General visitors
General visitors to the presentation websites can also watch the personal videos of the presenters and vote for the People's Choice Award winner, who will receive a prize money of up to $250. Visitors of general science background can also read the abstracts and comment in the discussion forums. Locate the link on the site that most likely appears as comments reactions.
Visit http://sigmaxishowease.tumblr.com/for a sample Student Showcase presentation site.
21.Who is the most likely candidate for the judge of the competition?
A.A graduate student of physics.
B.A professor of western literature.
C.An undergraduate of cell biology.
D.A specialist in human social sciences.
22.What is the judge expected to do?
A.Assess science presentation websites.
B.Interview the contestants at a given time.
C.Vote for the People's Choice Award winner.
D.Evaluate personal videos given by presenters.
23.Where is this text probably taken from?
A.A website. B.A magazine.
C.An advertisement. D.An academic article.
