Prior to 1965 geologists assumed that the two giant rock plates meeting at the San Andreas Fault generate heat through friction as they grind past each other, but in 1965 Henyey found that temperatures in drill holes near the fault were not as elevated as had been expected. Some geologists wondered whether the absence of friction-generated heat could be explained by the kinds of rock composing the fault. Geologists' pre-1965 assumptions concerning heat generated in the fault were based on calculations about common varieties of rocks, such as limestone and granite; but "weaker" materials, such as clays, had already been identified in samples retrieved from the fault zone. Under normal conditions, rocks composed of clay produce far less friction than do other rock types.
In 1992 Byerlee tested whether these materials would produce friction 10 to 15 kilometers below the Earth's surface. Byerlee found that when clay samples were subjected to the thousands of atmospheres of pressure they would encounter deep inside the Earth, they produced as much friction as was produced by other rock types. The harder rocks push against each other, the hotter they become; in other words, pressure itself, not only the rocks' properties, affects frictional heating. Geologists therefore wondered whether the friction between the plates was being reduced by pockets of pressurized water within the fault that push the plates away from each other.
Henyey found that temperatures in drill holes near the fault were not as elevated as had been expected.不是像所期盼的
Henyey found that temperatures in drill holes near the fault were not as elevated as had been expected. 所以B 说 unexpected finding C的particular experiment 不对 文章没有提到某一个特定的实验
C examining the assumptions underlying a particular experiment错误的原因不是说一个特别实验的假设，没有特别的实验 B 自从Henry发现temperatures in drill holes near the fault were not as elevated as had been expected. 这个unexpected科学发现，后面都是在讨论这个发现的一些解释。。
楼上的没有理解题目意思。 这篇阅读逻辑主线是： 1965年以前科学家们都认为San Andreas Fault 的岩石相互碰撞会产生大量热－－－1965 Henyey 发现fault洞口 附近的温度并不高（对前面结论产生质疑）－－－科学家们推测是不是因为岩石组成问题，因为某些岩石碰撞摩擦中不会产生高温。－－－－In 1992 Byerlee tested实验结果表明热量并不是岩石组成成分特殊导致，而是压力导致－－－然后科学家又推测是不是因为水。。。。。 但是我觉得这道题目。。b选项不是特别有说服力。。。
你都解释出原因了，开头 “965年以前科学家们都认为San Andreas Fault 的岩石相互碰撞会产生大量热－－－1965 Henyey 发现fault洞口 附近的温度并不高（对前面结论产生质疑）”这是一整句话很重要引出下文的内容，大部分科学家认为的assumption：温度高 + 后来H发现温度然而并不高 = an unexpected scientific finding。 不是assumptions 也不是 a particular experiment。
0 0 回复 2018-11-15 09:52:20
应该是两个解释吧 不是E一个解释 一个解释是 组成的岩石不同 还有一个解释是压力导致的 作者没有明确说哪个是对的 只是陈述两种解释 没有倾向支持哪一个 所以E不对