... conditioning, has made deserts much more 11 . Three great stretches of sandy deserts almost circle the center of Australia.a. dunes b. valleys c. lands d. areas 12 . Deserts are also classified ... d. location 48. a. adaptations b. agreements c. accepts d. achievements49. a. place b. put c. store d. hold50. a. spend b. take c. last d. experience Unit 9_ DESERTS TEST 1 Choose the word ... d. facial 13 . Thanks to pictures taken by satellites, deserts have not ________ a mystery in our time.a. hidden b. intended c. remained d. attained 14 . Deserts take ________ one-third of the...