题目内容

A.When they learnt how to keep animals in herds.B.When they had to go about from place

A. When they learnt how to keep animals in herds.
B. When they had to go about from place to place for food.
C. Before they learnt how to plant crops.
D. When they finally learnt the art of farming.

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【B15】

A. prospective
B. past
C. present
D. current

Only some of the teenagers say that they have good judgment when they don't.

A. Y
B. N
C. NG

【B8】

A. in
B. at
C. by
D. on

强、平衡、灵活的高级神经活动类型与气质类型中()相对应。

A. 多血质
B. 胆汁质
C. 黏液质
D. 抑郁质

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