IR35题，很晕……

kaxaf

看完答案后觉得思路还是挺清晰的
35A.文章后部分说moisture对于L的movement起决定作用，再说那些snow还没有melt，但较此前部分说了 L 渗透进去crack里去了，这就说明了之前的temperture肯定更高使得snow melt从而导致有moisture，在导致L 的movement，渗进crack里去。

ZHUYURUN1004

kankanba

xiaohaotoutou

huifu

cxz901019

ddddddddddddddddddddddddddddddddd

powerlgx

C 中说0度以上Rock V会大量含有M，而结合题设，在A的那个山发现的Rock V只含有limonite，没有M，因此就算0度以上 也推不出Rock V中会有M

babybearmm

看看答案吧选 D F
花了4'12''

babybearmm

哦，看了答案明白了。我对F选项的判断被Mg干扰了。(I thought: because #1.Mg cannot be in continuously < freez point, and #2. no Mg found, Conclusion: never > freez point.  I failed to distinguish the necessary condition and the sufficient condition)


F must be true:
Premise 1. has moved (penetrate)
Premise 2. moisture (means "T > freez point") is necessary for the movement
Therefore, has been "T > freez point"
Premise 3. in recent years, T NOT > freez point
Therefore, "T > freez point" sometime in the past


C must be false:
Premise 1. Mg due to bac
Premise 2. bac NOT survive in the "continuously frozen" place of Ant
Conclusion: No Mg in "continuously frozen" place of Ant


Choice C: notice the qualifier "continuously frozen location". from our above conclusion, we should conclude "No Mg".
also the extreme words: "when increase to ... BEGIN" (indicates IMMEDIATE action) and "SIGNIFICANT amounts"


(D) is guilty of the unjustified extreme words ("most""extreme"), so it cannot be must-be-true. It may be true that Fe-only rock is mostly found in mildly cold environment, not in extremely cold environment.

看看答案吧选 D F
花了4'12''

-- by 会员 babybearmm (2012/6/30 5:19:57)

蓝柏

我觉得吧，既然题干中说道：科学家在南极洲发现的rock varnish含有“only”of limonite, 那么在35A的前提下，从前即使温度超过过0度，也不可能有m存在了。可以这么理解么？

小奇奇怪lily

3Q