| Prior to 1965 geologists assumed
that the two giant rock plates meeting at the San Andreas Fault generate heat Line
through friction as they grind past each (5) 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 (10) friction-generated heat could be explained by the kinds of rock com- posing the fault. Geologists’ pre-1965 assumptions concerning heat gen- erated in the fault were based on (15) 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 (20) 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 (25) 10 to 15 kilometers below the Earth’s surface. Byerlee found that when clay samples were subjected to the thou- sands of atmospheres of pressure they would encounter deep inside the (30) 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 (35) rocks’ properties, affects frictional heating. Geologists therefore won- dered 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. Q4: The passage suggests which of the following regarding Henyey’s findings about temperature in the San Andreas Fault? - Scientists have yet to formulate a definitive explanation for Henyey’s findings.
- Recent research suggests that Henyey’s explanation for the findings should be modified.
- Henyey’s findings had to be recalculated in light of Byerlee’s 1992 experiment.
- Henyey’s findings provided support for an assumption long held by geologists.
- Scientists have been unable to duplicate Henyey’s findings using more recent experimental methods.
请问哪里可以看出B所说的评价? 硬是看不出来..... | 
