1) Which is the longest river in the world? a) The Mississippi b) The Amazon c) The Seine  d) The Nile 2) Which is the farthest planet from the sun? a) Mercury b) Mars c) Venus d) Pluto 3) In which country did the world's worst nuclear disaster take place in 1986? a) Sweden b) Germany c) Ukraine d) Russia 4) What is the hottest part of a candle's flame? a) the top b) the center c) the bottom 5) What is the fastest thing we know? a) sound b) light c) a bullet 6) Of which creature are there most species on this earth? a) flies b) beetles c) frogs d) snakes

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