21. On the basis of the premises advanced, which one of the following principles, if established, would provide the most justification for the conclud...
SECTION ITime-35 minutes28 QuestionsDirections： Each passage in this section is followed by a group of questions to be answered on the basis of what i...
Historians generally agree that, of the great modern innovations, the railroad had the most far-reaching impact on major events in the United States i...
Three basic adaptive responses-regulatory, acclimatory, and developmental-may occur in organisms as they react to changing environmental conditions. I...
The Constitution of the United States does not explicitly define the extent of the President's authority to involve United States troops in confli...
SECTION IVTime—35 minutes25 QuestionsDirections： The questions in this section are based on the reasoning contained in brief statements or passa...
10. Millions of irreplaceable exhibits in natural history museums are currently allowed to decay. Yet without analyses of eggs from museums, the studi...
Questions 17-18Zelda： Dr. Ladlow, a research psychologist, has convincingly demonstrated that his theory about the determinants of rat behavior genera...
SECTION ITime —— 35 minutes24 questionsDirections： The questions in this section are based on the reasoning contained in brief statements ...
10. Rhizobium bacteria living in the roots of bean plants or other legumes produce fixed nitrogen which is one of the essential plant nutrients and wh...