Among the social sciences,economics,the author maintains_____.
A. should not be regarded as part of the social sciences
B. countenances (支持) debate
C. is crucial for rational and comprehensive solutions.
D. is especially limited
Compared with the old justice concept, modern law as shown in this passage is_____.
A. less vengeful
B. less effective
C. less just
D. less reasonable
In the research conducted by Daniel Langleben, ______.
A. many liars were not detected by the researchers
B. many subjects were caught lying by the researchers
C. no subject successfully deceived the researchers
D. the mixed results failed to lead to credible conclusions
What does the author think of the new lie-detection machines？
A. They are perfect examples of scientific breakthroughs.
B. They are not good enough to replace the old machines.
C. They have the potential to change the way the court works.
D. They need further improvement so as to be more reliable.
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