1、这个实验样本是否能够代表普罗大众(而不是因为他们本身就很容易得X病)
2、D
3、During salmon spawning season, the bears that avoid the salmon streams are typically smaller and less aggressive than those that frequent such streams.
Day 69
1. 吃什么都得的病
说的是一个实验,被分成两组来研究disease X--那两组人是被观察研究的,(disease X确实是题目中该病的名称,不是我编的),跟踪了两组人,发现两组都没有感染disease X; 但有一组好像 diet变化什么的;另一组没有变化;结论忘记了。但觉得这题不难,无关的选项很容易辨认。
问weaken
选项有:(1)他们吃的食物里,有其他导致这种疾病的东西。
(2)减肥的人的体重下降10% 和什么8磅之类的说法(应该是无关)。
(3)whether the group is demographically representative
(4)有一个干扰项跟寂静上的正确选项很像,就是说样本的number
两组人做实验,一组节食一组不节食,N年后都得了diseaseX, 所以节不节食都会导致X
C 样本是否有代表性
2. 杀虫剂BF
Certainly, pesticides can adversely affect the environment in localities distant from where the pesticide has actually been used. Nevertheless, regulation of pesticide use should not take place at the national level but at the local level. It is in the areas where pesticides are actually applied that they have their most serious effects. Just how serious these effects depend on local conditions such as climate, soil type, and water supply. And local officials are much more likely than national legislators to be truly knowledgeable about such local conditions.
In the argument given, the two boldface portions play which of the following roles?
A. The first provides support for the conclusion of the argument; the second states that conclusion.
B. The first states the conclusion of the argument; the second provides support for that conclusion.
C. The first identifies grounds for a potential objection to the conclusion of the argument; the second states that conclusion.
D. The first identifies grounds for a potential objection to the conclusion of the argument; the second provides support for that conclusion.
E. Each provides support for the conclusion of the argument.
D
先说pesticide有不好的effect对离它使用地远的地方。但是,管制不应该在national level,
然后讲了严重程度取决于local的条件,所以local official 比 national更了解情况。
说的是一个实验,被分成两组来研究disease X--那两组人是被观察研究的,(disease X确实是题目中该病的名称,不是我编的),跟踪了两组人,发现两组都没有感染disease X; 但有一组好像 diet变化什么的;另一组没有变化;结论忘记了。但觉得这题不难,无关的选项很容易辨认。
问weaken
选项有:(1)他们吃的食物里,有其他导致这种疾病的东西。
(2)减肥的人的体重下降10% 和什么8磅之类的说法(应该是无关)。
(3)whether the group is demographically representative
(4)有一个干扰项跟寂静上的正确选项很像,就是说样本的number
选(3)
2. 杀虫剂BF
Certainly, pesticides can adversely affect the environment in localities distant from where the pesticide has actually been used. Nevertheless, regulation of pesticide use should not take place at the national level but at the local level. It is in the areas where pesticides are actually applied that they have their most serious effects. Just how serious these effects depend on local conditions such as climate, soil type, and water supply. And local officials are much more likely than national legislators to be truly knowledgeable about such local conditions.
In the argument given, the two boldface portions play which of the following roles?
A. The first provides support for the conclusion of the argument; the second states that conclusion.
B. The first states the conclusion of the argument; the second provides support for that conclusion.
C. The first identifies grounds for a potential objection to the conclusion of the argument; the second states that conclusion.
D. The first identifies grounds for a potential objection to the conclusion of the argument; the second provides support for that conclusion.
E. Each provides support for the conclusion of the argument.
Day 69
1. 吃什么都得的病
说的是一个实验,被分成两组来研究disease X--那两组人是被观察研究的,(disease X确实是题目中该病的名称,不是我编的),跟踪了两组人,发现两组都没有感染disease X; 但有一组好像 diet变化什么的;另一组没有变化;结论忘记了。但觉得这题不难,无关的选项很容易辨认。
问weaken
选项有:(1)他们吃的食物里,有其他导致这种疾病的东西。
(2)减肥的人的体重下降10% 和什么8磅之类的说法(应该是无关)。
(3)whether the group is demographically representative
(4)有一个干扰项跟寂静上的正确选项很像,就是说样本的number
两个组,变量是diet,削弱的话看看有没有他因,或者样本有没有代表性?
选(3)
2. 杀虫剂BF
Certainly, pesticides can adversely affect the environment in localities distant from where the pesticide has actually been used. Nevertheless, regulation of pesticide use should not take place at the national level but at the local level. It is in the areas where pesticides are actually applied that they have their most serious effects. Just how serious these effects depend on local conditions such as climate, soil type, and water supply. And local officials are much more likely than national legislators to be truly knowledgeable about such local conditions.
In the argument given, the two boldface portions play which of the following roles?
A. The first provides support for the conclusion of the argument; the second states that conclusion.
B. The first states the conclusion of the argument; the second provides support for that conclusion.
C. The first identifies grounds for a potential objection to the conclusion of the argument; the second states that conclusion.
D. The first identifies grounds for a potential objection to the conclusion of the argument; the second provides support for that conclusion.
E. Each provides support for the conclusion of the argument.