标题: 求解两道逻辑题 [打印本页] 作者: sandrinehao 时间: 2013-12-22 11:14 标题: 求解两道逻辑题 1.The recently announced dissolution of the Freedom Party, a major national political party, will not benefit the one other major national political party, the Liberty Party. It will, however, help third parties, including the Workers Party, who will now take more votes away from the Liberty Party in the upcoming national presidential race than would have been taken by the Freedom Party, had it not been dissolved.
Which of the following, if true, would cast the most serious doubt on the claim made in the last sentence above?
(A) Name recognition is a better predictor of a political party's success than how well its positions match with public opinion.
(B) Most voters had considered the Freedom Party and the Liberty Party to have very similar positions on most key issues. your answer
(C) The Workers Party only runs political candidates in local elections, including those for city council members, assemblymen, and mayors.correct
(D) Polls indicate that most voters believe that candidates for third parties are more honest and trustworthy than are candidates for major national parties.
(E) The dissolution of a major political party inevitably causes many voters to change their long-standing voting habits and vote for parties they have never voted for in the past.
2.The primary chemical in a certain insecticide becomes active the moment the insecticide is sprayed onto a given tree. This chemical becomes inactive, and non-lethal to insects, after being exposed to the air for 14 days or after being ingested by an insect, which dies immediately upon this ingestion. Therefore, the large number of insects that have been observed to die after landing on a tree more than 14 days after this tree has been sprayed must not have died from ingesting the insecticide.
Which of the following, if true, most seriously weakens the conclusion above?
(A) Some laws about insecticide use do not ban the use of several insecticides at a given time, as long as these insecticides are not sprayed simultaneously.
(B) Machines, which are often used to spray an insecticide the first time this insecticide is used in a given region, often spray more insecticide than is necessary to kill the insects on any given tree.
(C) The insecticide can slowly penetrate the bark of a tree and poison any insect eggs lain inside, preventing these eggs from hatching for more than 14 days after the initial insecticide spraying. your answer
(D) Within 14 days after a tree is sprayed, rainstorms may carry the insecticide into a nearby stream, preserving the activity of its chemicals until it evaporates into the atmosphere and precipitates down with the rain. correct
(E) This insecticide can cause leaf dehydration, which sucks the nutrients out of the leaves, causing insects that depend on the tree for nourishment to die.
