【题型】组织结构题(根据Why...mention...判断)
【思路分析】问为什么要提到two butterfly species of the same color,考查目的,而非具体细节信息,需结合上下文
【原文定位】(0分45秒--1分33秒)
(female student) I've really enjoyed class recently and when we discussed mimicry, well, I thought what a great topic for my oral report, especially the part on… Here I wrote it down. Yeah, Batesian mimicry. So, Batesian mimicry, we said that's when a non-poisonous animal mimics, copies a poisonous animal in some way, say to trick a predator like how a non-poisonous butterfly might have the same color as a poisonous one.
(professor) Right. We discussed many examples…
(female student) like the Viceroy Butterfly. I'm gonna put that example in my talk about how the Viceroy Butterfly mimics the Monarch Butterfly. The Monarch really is poisonous to keep predators from eating it. And the orange color of the Viceroy's wing looks just like the Monarch’s.
【选项分析】
A ×: 学生的确提到了有毒的蝴蝶和无毒的蝴蝶,但不是为了问为什么这两种蝴蝶是独立物种,是为了举例解释Batesian mimicry,即学生想口语展示的话题,所以排除A
B ×: 这个例子是之后oral report想用的,不是last essay用的,与原文不符,排除
C ✔️: 上文学生说到mimicry(拟态)可以用作oral report的topic, 细化谈到Batesian mimicry(贝氏拟态),解释了定义后,举例提到无毒蝴蝶会模仿有毒蝴蝶的颜色来迷惑捕食者,举例就是为了说明前面的目的,即用作oral report的topic,与C对应;且下文学生也直说要把这个例子放进talk里
D ×: 学生提到Batesian mimicry后,不仅给了定义解释还举了例子,老师也赞同了,说明学生充分理解该概念,与原文不符,排除
【题目难度】中