0110-阅读26、29

HHB

26. What is the purpose of the material in paragraph three (lines 16-19)

(A) To define two types of glaciers (正确答案）

(B) To contrast glacier ice with non-glacier ice

(C) To present theories of glacier formation

(D) To discuss the similarities between glacial types

原文：In cold glaciers those formed in the coldest regions of the Earth, the entire mass of ice

is at temperatures below the melting point and no free water exists. In temperate glaciers,

the ice is at the melting point at every pressure level within the glacier, and free water is

present as small drops or as larger accumulations in tunnels within or beneath the ice.

问题：明明是描述两种glacier中ice的情形；怎么能说是define two types of glaciers呢？

29. It can be inferred from the last paragraph that a glacier

(A) can revert to a fluffy mass

(B) maintains the same shape throuthout the glacial process

(C) is too cold to be thoroughly studied

(D) can contribute water to lakes, rivers, or oceans （正确答案）

原文：Formation of a glacier is complete when ice has accumulated to a thickness (and thus weight) sufficient to make it move slowly under pressure, in much the same way that solid rock deep within the Earth can change shape without breaking. Once that point is reached, the ice flows downhill, either as a tongue of ice filling a valley or as thick ice cap that flows out in directions from the highest central area where the most snow accumulates.The up down leads to the eventual melting of ice.

问题：就因为原文中提到了melting of ice，所以就是contribute water to lakes...么？

谢谢！

[此贴子已经被作者于2005-7-31 14:58:15编辑过]

happytoni

26 选A  是对两种东西做定义

happytoni

either as a tongue of ice filling a valley or as thick ice cap that flows out in directions from the highest central area where the most snow accumulates.The up down leads to the eventual melting of ice.