GWD-18-Q8-Q10

wisdomcorn

1"in wild, these birds store food for retrieval later during periods of food scarcity."
2 "Throughout the experiment the jays were fed at levels typical of a time of scarcity"

这两句话的意思,我觉得没有把握.1 在野外,这些鸟储存食物,在食物缺乏的时候,再来取.

                            2  整个试验过程,喂养jays时,at levels typical of a time of scarcity 我怎么也说不出如何理解.

请高人指点我.

lemoncandya

以下是引用olivia_wwj在2008-4-16 22:40:00的发言：

啊~~这道题当时做的时候也错选了A，看了答案之后想起原文曾说过“  In the wild, these birds store food for retrieval later during periods of food scarcity. ”food scarcity 这是不是个这种鸟 retrieve 这种 stored food 的前提啊？

哪么A怎么错了？是不是错在some？应该是all吗？（不严谨）

请教各位~~

 

做这道题，要注意文中的一句话，很关键，也是这个实验能证明这种鸟有episodic-like” memory的核心依据。

Clayton’s birds switched their preference from crickets to peanuts once the food had been stored for a certain length of time,
                showing
            that they retain information about the what, the where, and the when.
        

---

 意思是说，一旦食物储存到达了一定的时间长度，鸟就会去找peanuts吃，而不是它们最喜欢的crickets，证明了，鸟是记得什么食物，存在哪里，什么时候存的。

从文中这句话，我们可以推断出来， 这个实验是根据食物稀缺时所经历的时间不同，鸟的preference不同，从而证明了鸟有用过去的记忆的能力。

所以这道题目，E就是这个题目的assumption,这个实验必须是在不同的时间长度进行的实验。

A项说有一些鸟，一有机会它们就去找存起来的peanuts， 跟这个实验的逻辑过程无关。

B   同理  无关，这个实验是跟食物存储时间长短不同，鸟的反映不同，跟食物本身谁先被完全找到无关。

C D很容易排除了，不做赘述。

Eliott

up

ursula_1

lemoncandya这样讲有点模糊，如果简单看这句话，错选c很正常

ursula_1

这样看吧，文中的核心话是

Clayton sought to examine evidence of scrub jays’ accurate memory of “what,” “where,” and “when” information and their binding of this information

。。。。。。

Clayton’s birds switched their preference from crickets to peanuts once the food had been stored for a certain length of time, showing that they retain information about the what, the where, and the when.

8. GWD-18-Q8 C
         D

According to the passage, part of the evidence that scrub jays can bind information is that they

A.      showed by their behavior that they were reexperiencing the past

B.       used information acquired through past experiences

C.      assessed the freshness of food that had been stored by other jays

D.      remembered what kind of food was stored in a particular location 

E.       recollected single bits of information about sources of food

D 中remember 对应retain information， a particular location 对应 where ； 而文中讲了what, where, and the when三样东西，而选项只针对where，因此题干用的是part of the evidence 显示了gmac出题的严谨

[此贴子已经被作者于2009-4-30 11:38:15编辑过]

tiegec803

真的不知道搜索之后怎么看到后面的回复, 只能自己顶到最前面自己看了

阿彻

我也急需14到31的~~哪里有讨论帖?

sunny8843

up

giantwill

up

richard11

顶