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【单选题】
在需要反应的情境下，刺激和应答的数量（S-R数量）越多，反应（ ）。A.
越长
B.
越短
C.
不变
D.
先增加后下降
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【简答题】何谓无粘性土坡的自然休止角?无粘性土坡的稳定性与哪些因素有关?
【简答题】'One World One Dream' fully _________ the universal values of the Olympic spirit -- Unity, Friendship, Progress, Harmony, Participation and Dream.
【简答题】One of the Olympic spirits is to educate young people through sport in a spirit of better understanding each other, and friendship, thereby ______.
【单选题】According to the spirit of the ancient Olympic Games, ____________
A.
wars between countries could be avoided through sports
B.
competition in sports led to wars between countries
C.
healthy mind could reinforce a healthy body
D.
healthy mind could be fostered by a healthy body
【简答题】《史记》的作者司马迁是哪个朝代的人？
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