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，并在答题纸上将该项涂黑。
A
Under Singapore’s Vaccinated Travel Framework, all travellers including Singapore citizens and permanent residents arriving from all countries/regions can enter Singapore without quarantine (隔离), testing or entry approvals if they meet the following requirements:
*Be a child born on or after 1 Jan. 2010 — children who meet this criteria can enter regardless of COVID-19 vaccination status (疫苗接种状态).
*Be fully vaccinated with WHO EUL vaccines if born on or before 31 Dec. 2009 (i. e. age 13 and above by year of birth). Mixed doses using WHO EUL vaccines, and one vaccination dose after a COVID-19 infection are also acceptable.
*Be vaccinated against Yellow Fever if you have visited Yellow Fever high risk countries/regions in Africa and Latin America — a valid Yellow Fever vaccination certificate is required.
Travellers born on or before 31 Dec. 2009 who do not meet the vaccination requirements above are considered non-fully vaccinated travellers. They will be subject to entry approvals, tests and quarantine. This includes travellers who:
*Are medically exempted (免除) from COVID-19 vaccination.
*Took non-WHO EUL vaccines only, and did not take the minimum dosage of WHO EUL COVID-19 vaccines.
*Recovered from COVID-19 but did not complete the minimum dosage of WHO EUL COVID-19 vaccines.
Generally, non-fully vaccinated long term pass holders and short-term visitors are not allowed to enter Singapore unless in exceptional circumstances.
Click the orange button below for a detailed checklist of travel requirements.
21. Who can enter Singapore without entry approvals?
A. A college graduate unvaccinated.
B. A business man from Africa with Yellow Fever.
C. A Singaporean infected with COVID-19.
D. A ten-year-old boy from Australia.
22. What will the non-fully vaccinated travelers do to enter Singapore?
A. Get a long term pass.
B. Provide entry approvals and receive tests and quarantine.
C. Have physical examination on a regular basis.
D. Take non-WHO EUL vaccines.
23. Where is this text probably taken from?
A. A textbook.B. A magazineC. A website. D. A brochure.
