2. A. negative B. gathering C. generous D. galaxy 9. If we do not take steps to_________the world’s wildlife, many species of birds and animals are likely to die out completely. A. defend B. keep C. protect D. guard 11. If you are not sure about the meaning of a word, _________it up in the dictionary. A. consult B. get C. keep D. look 12. Another positive aspect of tourism is that it helps ________international understanding and cooperation. A. promotes B. promoting C. to promote D. promote 13. Tourism plays an important...........in the development of many nations .(SYNONYM) A. title B. factor C. topic D. industry