有一题关于Unrelenting的阅读小题疑问求解

张迪清

This indicates that commuter diatoms, rather than relying onenvironmental cues to keep time, possess an internal pacemaker or biological clock that enables them toanticipate periodic changes in the environment. A commuter diatom has an unusually accurate biologicalclock, a consequence of the unrelenting environmentalpressures to which it is subjected; any diatoms that do not burrow before the tide arrives are washed away.

上面是原文

The passage suggests which of thefollowing about the accuracyof the commuter diatom's biological clock?

·        A The accuracy ofthe commuter diatom's biological clock tends to fluctuate when the diatom isobserved under variable laboratory conditions.

·        B The commuter diatom's biological clock tends to be more accurate than the biological clocksof most other species because of the consistency of the tidal cycle.错

·        C The commuter diatom's biological clock is likely to be more accurate than the biological clockof a species that is subject to less intense environmental pressures. 对

·        D The unusualaccuracy that characterizes the commuter diatom's biological clock is rareamong intertidal species.

·        E The accuracy ofthe commuter diatom's biological clock varies according to changes inthe tidal cycle.

下面是我的分析 我想选择B 因为我觉得 Unrelenting的意思和consistency一样

但是答案是c 想请教一下各位大神，应该怎么解释一下呢？

张迪清

哎呀 我有颜色的怎么都没有了。。。。。

张迪清

七、求解！！

张迪清

自己默默顶起来

张迪清

求解