14. What effects does the study result have on our life?
A, It is a test to judge honesty.
B. It can prevent a lot of crimes
C. It improves skills in asking questions.
D. It promotes the harmony between people.
15. What can we infer from the last paragraph?
A Delayed answers are lies
B. It is unfair to require all to answer slowly
C Delayed answers can lead to misjudgment
D Delayed response should be ignored completely.