8. What makes Lake Vostok different from other lakes is that it isa) so near the South Pole. b) on Jupiter’s moon, Europa. c) being explored by robots. d) completely covered by ice. 9. Nobody has yet got through to the waters of the lake becausea) the ice is too thick. b) they are afraid of polluting it. c) they are worried about disease from the bacteria. d) you can only see the lake on radar. 10. Lake Vostok could be a very important scientific discovery as it could showa) how life can survive in extreme conditions. b) how long Earth has existed. c) how robots work. d) how scientists write reports on their discoveries.