420.In the United States, trade unions encountered far more intense opposition against their struggle for social legitimacy than the organized labor movements of most other democratic nations.
(A) against their struggle for social legitimacy than
(B) in their struggle for social legitimacy than did
(C) against their struggle for social legitimacy as
(D) in their struggle for social legitimacy as did
(E) when they struggled for social legitimacy than has
the key:B
比较考点：more---than....;do的用法
425.Increases in the cost of energy, turmoil in the international money markets, and the steady erosion of the dollar have altered the investment strategies of United States corporations more radically than those of foreign corporations.
(A) altered the investment strategies of United States corporations more radically than those of
(B) altered the investment strategies of United States corporations more radically than
(C) altered the investment strategies of United States corporations more radically than they have
(D) radically altered the investment strategies of United States corporations more than
(E) radically altered the investment strategies of United States and
the key:A
比较考点：比较对象。the investment strategies of United States —— those offoreign corporations