1 小孩
有个说玩block的小孩对文字理解更好 做个试验小孩分成玩block和不玩的考察他们的communication能力 结果玩block的好so家长要多让小孩玩block
type：evaluation
reference answer:
E 玩block的小孩家人有没有对小孩有verb训练 （大概意思）
讨论
结论：家长让小孩玩block
原因：试验显示玩block的小孩比不玩block的小孩的communication能力高
分析：看试验对象的差异， 如果玩或不玩block是两组试验对象的唯一差异， 则能说明结论成立，如果还有其它差异， 如 玩block的有verb训练， 则结论不成立
2 捕鱼
有一道很简单的逻辑，GWD有的，说要保护一种鱼，然后引入旅游业，让捕鱼的去搞旅游，问你要考虑神马问题，
type:
RA:
应该就是旅游带来的危害和捕杀相比会不会更严重。
考古（来自brendaqian）：
In parts of the Caribbean, the manatee, an endangered marine mammal, has long been hunted for its meat. Having noted the manatee hunters’ expert knowledge of manatees’ habits, local conservationists are encouraging the hunters to stop hunting and instead to take tourists on boat rides to see manatees. Tourist interest is high, so the plan has promise of achieving the twin goals of giving the former hunters a good income and helping ensure the manatees’ survival.
Which of the following, if true, raises the most serious doubt about the plan’s chance of success?
1.Many tourists who visit these parts of the Caribbean are uninterested in manatees and would not be willing to pay what the former manatee hunters would have to charge for boat rides to see manatees.
2.Recovery of the species would enable some hunting to continue without putting the manatees’ survival in jeopardy again.
3.In areas where manatees have traditionally been hunted for food, local people could easily replace the manatee meat in their diets with other foods obtained from the sea.
4.There would not be enough former manatee hunters to act as guides for all the tourists who want to see manatees.
5.To maintain their current income, manatee hunters who switched to guiding tourists would have to use far larger boats and
3 用小孩实验
V1：还有个说children 用的药经常用adults做实验，government为了鼓励用children做实验，给那些企业发个patent，这样会有most profits，
问你考考虑神马问题，
type:
RA:
我选的是before patent expire，就有new technology出现
4. 孕妇与药
V1有种药可以治疗高血压，在怀孕的妇女中做调查，发现吃了药的woman和没吃药的woman比例相同，问weaken。
答案：pregant woman很特殊，因为。。。。。。
V2吃c导致p，在怀孕的妇女中做调查，发现吃了c的woman和没吃c的woman比例相同，问weaken。
答案：pregnant woman很特殊，因为怀孕的女的还吃什么了，可以免于得p
v3 [700+ 50/36]
说是一种东西会导致高血压对孕妇有害，吃一种东西可以防止它，然后就对比了两组在什么看护机构的人，结果发现一个吃那种防止高血压的东西的 一组并没有比那组不吃的少得病。所以，结论是那个药没用。但是，这个结果不能说明这个结论，since－－－－a是什么孕妇会更加频繁得得到照顾,别得不 记得了，自己选得也不记得了