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。
When you travel in other countries, you'll have to get yourself well prepared to ensure your safety and handle emergencies.
Before you leave, you'd better:
1. Take out medical insurance policy and learn what the plan covers and whether departure or return to the hometown is covered. Figure out payment choices, such as whether you have to speak directly with the insurance company, before or after treatment, whether you have to pay first and get compensation later.
2. Keep up to date on all required vaccinations (接种疫苗) .
3. Learn about the city or area where you are going to travel. Know how to say street names and landmarks in the local language. Figure out unique climate issues such as altitude, seasonal changes, potentially risky animals and insects.
