2012年12月大学英语六级阅读专项练习题14 ; e# a; M, }- A0 S0 R/ T & u/ V' { r1 Z. W0 f47.If the drug proves effective in human trials,it could enhance the effectiveness of existing AIDS drugs in___________________. & ?! R: y( e2 d- d. Q0 ^9 k$ M. ~
48.What has become standard cocktail therapy? 考试用书/ T3 F- D. X5 _; Q- ]- L f. D
49.While integrase deletes an immune cell’s genetic material and replaces it with its own,it acts like_____________in a word processor. % n1 S! \& _# I n/ S$ c
50.Why would anti-AIDS drugs stop working? 2 J0 j V4 E; R) l
51.According to Steven Young,if scientists get the data that_______,they would petition for fast track status.