A circadian rhythm lasts about __________ hours.
A. 6
B. 12
C. 24
D. 48
Answer: C
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According to research on desirable difficulties, you should wait at least _____ between study sessions in order to maximize long-term retention.
Fill in the blank(s) with correct word
According to national statistics, the average salary for women in the U.S. is approximately ____ of the average salary for men
a. 57% b. 98% c. 50% d. 82%
When the transfer of vibrations from the outer ear to the inner ear weakens, a person has which type of hearing loss?
a. aphasic b. noise-induced c. conductive d. sensorineural
Parapsychologists believe the "decline effect" shows
a. the consistency of positive results and adds credibility to the existence of ESP. b. a run of luck. c. cheating by participants. d. that parapsychological skills are very fragile.