4. Check your understanding: multiple choice
1. Modern explorers use compasses and
satellite phones and GPS 2. Ed often didn’t have enough food
3. Erik takes groups of blind people up mountains .
4. Ed used technology to contact local people.
5. Gerlinde supports a charity that helps children .
6. Gerlinde hasn’t done a long-distance bike ride.
7. Ed had to look out for wild animals.
8. Gerlinde had to go slowly because there wasn’t much oxygen.