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托福听力真题原文+题目+答案+mp3下载:Nepenthes plants

2022-07-16 来源:

托福听力真题原文+题目+答案+mp3下载:Nepenthes plants

托福听力真题原文+题目+答案+mp3下载:Nepenthes plants

托福听力真题原文如下:

So we've been looking at varieties of carnivorous plant species, plants that capture and consume insects. And today I'd like to introduce another. One that's often referred to as the pitcher plant. The scientific name for the picture plant is nepenthes.A hundred or so species of nepenthes found in the forests of Southeast Asia have a variety of shapes and sizes. (2)But since the soil there generally lacks adequate nutrients, these plants need to supplement the nutritional intake of the roots. And how do they do this? well, they have pitchers, modified leaves that are filled with fluid that act as traps for insects which fall into this fluid and are digested there to supply additional nutrition for the plant. Now, at first it appears that the nepenthes method of catching pray, mostly ants is pretty basic, that the pitcher part of the plant is a passive pitfail trap that any unsuspecting ant might just slip down into. And this has been a long held view of botanists. But investigation in the forest of Borneo has revealed that some nepenthes are far more active in catching their prey than previously。。。。。余下托福听力真题原文省略!

托福听力真题题目如下:

Question 1 of 6

What is this lecture mainly about?

O A. Atypical Nepenthes habitat in Northeast Asia

O B. New research findings regarding the life cycle of Nepenthes plants

O C. Acomparison of the predatory strategies of carnivorous plants and animals

O D. An unusual characteristic of some species of Nepenthes plants

Question 2 of 6

Why does the professor mention the soil in the forests of Southeastern Asia?

O A. To suggest that Nepenthes plants are not native to that region

O B. lb explain why Nepenthes plants need to trap insects

O C. lb illustrate a difference between Nepenthes and other carnivorous plants

O D. To provide an explanation for the different shapes and sizes of Nepenthes species

。。。。余下托福听力真题题目及答案省略!

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