阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。
A
A Guide to Freshman
Food Service
The URS Dining Hall opens from 7:00 am to 8:00 pm. It serves all kinds of snacks, drinks, ice cream and meals. You can pay with your cash or ID cards. You can put your cash into your ID cards at the front desk. Even if you do not buy your food in the URS dining hall you can still use the tables to enjoy meals to have your meetings with your friends and even to study.
Transportation
The URS Express is a bus service. The bus transports students between campus and the shopping center, leaving from the Mattson Center. Operation hours are between 9:00 am and 3:00 pm, Saturday only. Roundtrip fare is $2.
Academic Support
All students can enter the writing center on the upper floor of Douglas Hall. Qualified volunteers will work with you on written work, grammar, vocabulary, and other academic skills. You can sign up for an appointment on the sign-up sheet outside the door, two 30-minute appointments per week maximum. The service is free of charge.
Relaxation
The Globe, located in the bottom level of McMillan Hall, is used for relaxing, studying, cooking and eating. Monthly activities are held here for all international students. Hours are 10:00 am to 10:00 pm. Closed on Sundays.
21. What can we do in the URS Dining Hall?
A. Sell snacks, drinks, ice cream and meals.
B. Have a discussion with our friends.
C. Buy drinks and enjoying concerts.
D. Cook the meals by ourselves.
22. What can the URS Express do for the students?
A. Provide the students with campus tools.
B. Take students to the Douglas Hall.
C. Transport the students to and from the stores.
D. Carry the students to the lecture halls.
23. Whom can you get help from for your writing?
A. The professors. B. Volunteers. C. Trainers. D. Classmates.
