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- 868136
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- 小时
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- 2013-3-17
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- 1970-1-1
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1. 45s
BG:In order to trace the animals in the zoo...,fine.. a zoo is easier.. people put a device on the animals by shooting them.
Premise: Female animals reduce their fertility after the shooting
Conclusion: there must be some substance in the shooting which inhibit the animals' fertility.
Evaluate: There is no other factors which can lead to animals' fertility.
(I mixed up the methods :/)
2. 31s
BG1:In the following year of the tax increase of cigarette, sales fell 10%.
BG2: A year prior to the tax increase, sales fell only 1%.
Conclusion: The sales of cigarette is strongly related to the after-tax price
Strengthen: Other factors remained the same before and after the tax increase, the only variable factor is the tax,
3. 32s
BG: Most of the customer would choose to go shopping in the shopping department if they are offer with shopping cart.
Conclusion: Even if the profit it brings just offset the cost of offering the cart, it is still good for the department to do this.
Reasoning: People tend to buy more with a shopping cart. Longterm oriented
4. have done already. but still cannot figure it out...
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