托福阅读否定事实信息题范例5
2026-07-31来源：网络
多段式：结合文章结构，定位并排除，先以行文顺序为主，看下一题出题位置(顺便把题做了)，则本题为该题出题段落及以上，倒着找每段定位。
例题5：
GREEN ICEBERGS
Paragraph 6: Chemical evidence shows that platelets (minute flat portions) of ice form in the water and then accrete and stick to the bottom of the ice shelf to form a slush (partially melted snow). The slush is compacted by an unknown mechanism, and solid, bubble-free ice is formed from water high in soluble organic substances. When an iceberg separates from the ice shelf and capsizes, the green ice is exposed.
Which of the following is NOT explained in the passage?
Why blocks of ice break off where glaciers meet the ocean
Why blocks of shelf ice sometimes capsize after breaking off
Why green icebergs are commonly produced in some parts of Antarctica
Why green icebergs contain large amounts of dissolved organic pigments
