来自：查字典高考网 2014-12-25
Question 1-8
When Jules Verne wrote Journey to the Center of the Earth in 1864， there were many conflicting theories about the nature of the Earths interior. Some geologists thought that it contained a highly compressed ball of incandescent gas， while others suspected that it consisted of separate shells， each made of a different material. Today， well over a century later， there is still little direct evidence of what lies beneath our feet. Most of our knowledge of the Earths interior comes not from mines or boreholes， but from theof seismic waves - powerful pulses of energy released by earthquakes.
The way that seismic waves travel shows that the Earths interior is far from uniform. The continents and the seabed are formed by the crust - a thin sphere of relatively light， solid rock. Beneath the crust lies the mantle， a very different layer that extends approximately halfway to the Earths center. There the rock is the subject of a battle between increasing heat and growing pressure.
In its high levels， the mantle is relatively cool； At greater depths， high temperatures make the rock behave more like a liquid than a solid. Deeper still， the pressure is even more intense， preventing the rock from melting in spite of a higher temperature.
Beyond a depth of around 2，900 kilometers， a great change takes place and the mantle gives way to the core. Some seismic waves cannot pass through the core and others are bent by it. From this and other evidence， geologists conclude that the outer core is probably liquid， with a solid center. It is almost certainly made of iron， mixed with smaller amounts of other elements such as nickel.
The conditions in the Earths core make it a far more alien world than space. Its solid iron heart is subjected to unimaginable pressure and has a temperature of about 9，000oF. Although scientists can speculate about its nature， neither humans nor machines will ever be able to visit it.
1. The word conflicting in line 2 is closest in meaning to
（A） controlling
（B） outdated
（C） opposing
（D） important
2. What is todays richest source of information about the Earths interior for geologists？
（A） Boreholes
（B） Shells
（C） Seismic waves
（D） Mines
3. The word There in line 16 refers to the
（A） mantle
（B） crust
（C） seabed
（D） Earths center.
4. Which of the following is a primary characteristic of the Earths mantle？
（A） Light， solid rock
（B） Uniformity of composition
（C） Dramatically increasing pressure
（D） Compressed， incandescent gas
5. The phrase gives way to in line 24 is closest in meaning to
（A） runs along
（B） rubs against
（C） turns into
（D） floats on
6. The word it in line 26 refers to
（A） mantle
（B） core
（C） change
（D） depth
7. Why does the author state in line 30-31 that the Earths core is more alien than space？
（A） Government funds are not available tothe Earths core.
（B） Scientists arent interested in the characteristics of the Earths core.
（C） It is impossible to go to the Earths core to do research.
（D） The Earths core is made of elements that are dangerous to humans.
8. The word speculate in line 33 is closest in meaning to
（A） report
（B） learn
（C） worry
（D） hypothesize
【1996年10月托福阅读全真考题】相关文章：
[标签：海外留学,考试,托福,,]
高考阅卷名师给考生的高考作文密训课 第5集 高考作文审题实操方法精讲（三）
创艺第二届：2019届高考录取表彰大会暨“核桃音乐节”合影——你只管努力，剩下的交给创艺
1000张学生用草稿纸考研专用免邮空白便宜薄演草演算纸白纸本书写纸批发打草a4大张实惠装18k高考数学草稿本
高考阅卷名师给考生的高考作文密训课 第4集 高考作文审题实操方法精讲（二）
2019全国高考志愿填报攻略 第50集 天津市高考历史三年本科录取排名
广州早晨 2019 山西一高中班主任带学生骑行1800公里去上海
美术联考用纸上海考试模拟试卷纸高考统考纸 4k水粉纸素描纸 速写纸卡纸美术模拟测试试卷纸 美术考试专用纸
张雪峰高考志愿填报指南 第47集 高考志愿，令人头疼的数学系，才是专业万金油，毕业后机会多
学渣儿子高考，英语选择题全选B！老师通报成绩的那一刻父亲懵了
高中语文知识清单高考语文总複习工具书第5次修订五全綵版五三曲一线科学备考基础知识手册知识大集结资料书参考书导书高一高二高三
