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- 868136
- 在线时间
- 小时
- 注册时间
- 2013-3-17
- 最后登录
- 1970-1-1
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1. 45s看完了之后发现自己走神了 囧
BG: Business used to locate in downtown, but now more in suburbs.
Reason: Facilities不给力
Plan: build more office buildings and reduce tax in downtown
Weaken: If most of the clerical officers live in suburbs....
2. 50s
BG1:Trees cut for lumber and wood chips.
BG2:The cost for cutting is the same in the forest or in the factory
Premise:Wood chips takes only as half the volumn as original trunk.
Conclusion: They might still chose to first cut it into chips and deliver them to factory... 好吧我又跳跃了一步。Transportation cost是key word, considering the volumn of cargo.
3. more than 1min
BG: A microscope plant grows on the sea ice under condition1: enough sunlight; condition2: enough sea water
Premise: Snow shadows the sunlight on the plant.
BUT: on ice covered with snow grows more plants A than on ice with less snow.
resolve the paradox: snow brings more sea water?
No! I ignore the key words "splashing onto the surface"!
4. 37s
BG: Radio station with a special system could only be received by the special radio.
Premise1: 1994-1996 number of stations increased
Premise2: but number of radio devices stayed constant.
Conclusion: No increase in number of people who receive the special radio.
Assumption: One person one device of radio |
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