阅读下列短文，从每题所给的四个选项（A、B、C、D）中选出最佳选项。
A
STEM Summer Programs for High School Students
STEM is a term that stands for science, technology, engineering, and mathematics.Here is a list of some of the best STEM summer camps for high school students.
Future Matters Program
It is an eight-week paid summer research experience for high school students.This is a hands-on program for worldwide students interested in going after a career inmedical research. Students will attend seminars led by faculty and participate indiscussions with peers.
Simons Summer Research
It is a seven-week program located at Stony Brook University. Students will havethe opportunity to participate in special workshops, tours and events. They willconclude the program by producing a written research abstract and research poster.
Research Science Institute
It is the first cost-free program of its kind. During this seven-week program,students will dive deeper into the world of science and engineering by experiencingthe entire research cycle. In this program, students attend classes conducted byfamous professors and prepare oral presentations to present their research.
Program in Math for Young Scientists
This program is a six-week intensive mathematics program designed for studentsacross the globe. Unlike common programs, it offers a great deal of independence forstudents to choose their own schedules and decide what they want to study. Besides learning, there is also "mandatory (强制) fun time" built into the weekly schedule so that students are able to have non-math related activities.
21. Which program will be summarized with written material?
A. Future Matters Program. B. Simons Summer Research.
C. Research Science Institute. D. Program in Math for Young Scientists.
22. What do Simons Summer Research and Research Science Institute have incommon?
A. Expense. B. Requirement. C. Duration. D. Content.
23. What's special in Program in Math for Young Scientists?
A. Cultivating independent skill. B. Attending non-math activities.
C. Enrolling international students. D. Tailoring personal schedules.
