( )21. To ensure a correct understanding of the new regulations, we need to clarify some ________ points of view and put the system into practice.
A. artificial B. arbitrary C. ambiguous D. absolute
( )22. —A new monetary policy will take effect next month.
—Really good news, especially for those companies that ________ with money.
A. have struggled B. struggled C. have been struggling D. had struggled
( )23. Japan has recently announced that it will restart commercial whaling, ________ great concern and controversy throughout the world.
A. to cause B. causing C. having caused D. to have caused
( )24. Stan Lee, an outstanding comicbook writer, created plenty of superheroes in his works，________ the Spiderman and the Xmen are the most famous.
A. for them B. for which C. of them D. of which
( )25. The relevant authorities have recently ________ some companies and individuals for their illegal emission that is harmful to the environment.
A. cut back on B. cracked down on C. followed up on D. held out on
