cook

Join this discussion:
19. Need a bridge: But it is unrealistic to expect such measures to compensate for pilots’lack of actual flying time.-->  Therefore, the airlines should rethink their training approach to reducing commercial crashes . That is :

pilots’lack of actual flying time is one of the reasons of commercial crash.
==> D  correct?
11: zhy79 's explaination is good.
biologist：如果森林继续恶化，koala将消失 ( D--> E)
politivian：所以我们只需阻止森林恶化，就能防止koala消失( ~D --> ~E)
according to logical structure, we know there are different.
Question: Which one of the following statements is (consistent with the biologist’s claim but not with the politician’s claim?)
So: B:如果森林(delete继续)恶化stop ，koala(delete将)消失.Not comsistent with Politivian's claim.

cook

Let us try:

Conclusion: Therefore, given that a price that will prove to be right is virtually impossible for the seller to gauge in advance, the seller should make sure that any error in the initial asking price is in the direction of setting the price too high.

Question: The argument recommends (a certain pricing strategy ) (on the grounds that)

R: A certain pricing strategy which the argument recommends is high pricing because of trying to sell such an item fast by asking too low a price is a serious error, since it calls into question the very thing---exclusivity---that is supposed to be the item’s chief appeal.

==> A : this strategy lacks a counterproductive feature of the rejected alternative.  We can see, anwer A summarize the premise,that is the reason.

cook

[U]7. D

13. Conclusion: Therefore, since there is [U]an effective treatment for Y[/U] but no treatment for X,) we must act on the assumption that the patient has a case of Y.

Asking: The physician’s reasoning could be based on which one of the following ([U]principles?)[/U]

Answer:

D) When success is possible only if a circumstance beyond one’s control is favorable,( means: when effective treatment for Y is possible only if a condition is favorable that patient Y is suffering Y) is  and then one’s strategy must be (based on the assumption that this circumstance is in fact favorable) -> (act on the assumption that the patient has a case of Y)

(A) In treating a patient who has one or the other of two diseases, it is more important to( treat) the diseases than to (determine )which of the two diseases the patient has.  

Comparing the purpose of doctor is not the principle , actually not the doctor's meaning. You know , we often act this way to treat patient under such condition , the way having an effect that if fail, we could know the patient probably suffering X , that we call: " 治疗性诊断".