enerative brain disorder, which gradually destroys the ability to reason, remember, imagine and learn. A. progressive B. threatening C. sophisticated D. corrupt 45.McCain already has about half of the delegates he needs to win the party ________________. A. proposition B. essor C. loyalty D. nomination 46.This explains why ina desert you may roast during the day but ________________ at night. A. shake B. shiver C. waive D. hover 47.Switzerland, which at present imposes no restrictions ________________ on the free circulation of works of art, may soon lose its status as one of the world's most liberal countries in the field of art trade. A. available B. freely C. heavily D. whatsoever 48.He said the area was being cooled down yesterday to make sure the fire would not ________________ again.