32.1. the primary purpose of the passage is to

　　describe a previously unknown natural phenomenon

　　reconstruct the evolution of a natural phenomenon

　　establish unequivocally the accuracy of a hypothesis

　　survey explanations for a natural phenomenon and determine which is best supported by evidence.

　　entertain criticism of the authors research and provide an effective response

　　32.2. which of the following does the author cite as a weakness in the argument that bacterial chemosynthesis provides the foundation for the food chains at deep-sea vents?

　　vents are colonized by some of the same animals found in other areas of the ocean floor

　　vent water does not contain sufficient quantities of hydrogen sulfide.

　　bacteria cannot produce large quantities of food quickly enough.

　　large concentrations of minerals are found in vent water.

　　some bacteria found in the vents are incapable of chemosynthesis

　　32.3. which of the following is information supplied in the passage that would support the statement that the food supplies necessary to sustain vent communities must be many times that of ordinary fallout?

　　large vent faunas move from vent to vent in search of food

　　vent faunas are not able to consume food produced by photosynthesis.

【GRE阅读高频机经原文及试题：海底火山生物】相关文章：

★ GRE阅读长难句解读（11）

★ GRE阅读难句解读（二）

★ GRE阅读长难句解读（4）

★ 新GRE阅读倒装句解题方法

★ GRE阅读出题规律深度剖析

★ GRE阅读题型分析之细节题（2）

★ 新GRE阅读练习题（4）

★ 新GRE阅读练习题（5）

★ GRE阅读长难句解读（5）

★ GRE阅读长难句解读（20）