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
If you are a college student looking for a program or taking a gap year to decide what to do next in life, then you should definitely consider volunteering abroad. We have made the selection process easier for college students! Take a look at these volunteer projects one can choose.
Wildlife Conservation Projects
They are meant for college students who are looking forward to spending time with animals. However, before starting the projects, college students have to attend an online meeting to see if they are suitable for the job, during which they need to answer some questions. Volunteers will get an opportunity to be part of a team working to make the environment better for some animals, as well as protecting them from danger.
Short-term Volunteer Programs （2-week Specials）
They are perfect for those who are looking for spring break programs or summer break programs. The “2-week Special Volunteer Programs” are made for college students who have less time to contribute but want to travel and volunteer abroad. Most of the programs are located in beautiful places and are extremely affordable.
Summer Volunteer and Travel Programs （3~4-week Specials）
If you think you can make your vacation a little longer, then go for the Summer Volunteer and Travel Programs. These programs are designed in an amazing manner. Volunteers will go to the destinations（目的地）, live like the locals, do some adventure sports, learn a new language and so on.
Community Development Projects
It is said that there are about 1 billion people who are short of housing facilities（住房设施）. It is for this that Community Development Projects hold strong importance in our society. Volunteers are needed to make some real changes. Volunteers will be working to build or repair houses, school premises（校舍）, and shelter homes. They help to achieve the goal of making society better.
21. What should college students do before they join the Wildlife Conservation Projects?
A. Take a language test. B. Have an online interview.
C. Learn some animals' habits. D. Prepare some foods for animals.
22. Which of the following may best suit a college student who doesn't have much time or money?
A. Wildlife Conservation Projects. B. Short-term Volunteer Programs.
C. Community Development Projects. D. Summer Volunteer and Travel Programs.
23. What are volunteers required to do in the Community Development Projects?
A. Take on some building work.
B. Help some families do housework.
C. Teach some children to learn a new language.
D. Buy some basic necessities of life for local people.
