Questions 1-5 Reading Passage 1 has five sections, A-E. Choose the correct headings for sections A-E from the list of headings below. Write the correct number, i-ix, in boxes 1-5 on your answer sheet. List of Headings i Mushrooms that glow in the dark ii Bright creatures on land and in the sea iii Evolution’s solution iv Cave-dwelling organisms v Future opportunities in biological engineering vi Nature’s gift to medicine vii Bioluminescence in humans viii Purposes of bioluminescence in the wild ix Luminescent pets Section B