4.根据预言，电将给农业带来重大革命。因为，电极可插进土壤，电流可以杀死害虫和杂草，所以使得庄稼长得好
A：为了防止农民在地里工作时触电，此时电流将会被关掉，而达不到目的
B：如果用电的方法被采纳，农民可以节约农药
C：不能保证用电使用有好处
D：因为杂草和庄稼是植物，同样的道理，电也会影响庄稼
E：因为种植机必须远离电极，种植机的新部分需要被发明
4. (OG12-04) According to a prediction of the not-so-distant future published in 1940, electricity would revolutionize agriculture. Electrodes would be inserted into the soil, and the current between them would kill bugs and weeds and make crop plants stronger.
Which of the following, if true, most strongly indicates that the logic of the prediction above is flawed?
(A) In order for farmers to avoid electric shock[c1] while working in the fields, the current could be turned off at such times without diminishing the intended effects.
(B) If the proposed plan for using electricity were put into practice, farmers would save on chemicals[c2] now being added to the soil.
(C) It cannot be taken for granted that the use of electricity is always beneficial[c3] .
(D) [c4] Since weeds are plants, electricity would affect weeds in the same way as it would affect crop plants. D
(E) Because a planting machine[c5] would need to avoid coming into contact with the electrodes, new parts for planting machines would need to be designed.
本题的结论是electrodes会杀死虫子和杂草àcrop plants会长得更好。漏洞就很明显了，weed和crop plants同样都是植物，凭什么electrodes杀死了虫子不杀农作物?
答案：D
5. 公司正考虑变换工作时长的策略，现在要求所有员工早上8点到。提议：员工在早上6点至11点任何时间到达都可以。
采取了这个政策将会导致员工生产力下降，如果工作要求员工做______?
A：工作时不受其他员工干扰
B：至少每天一次向其他公司员工请教
C：把他们的工作交给上司批准
D：工作时，员工之间整天都需要互动
E：工作任务几天才能完成
5. (OG12-05) A company is considering changing its policy concerning daily working hours. Currently, this company requires all employees to arrive at work at 8 a.m. The proposed policy would permit each employee to decide when to arrive—from as early as 6 a.m. to as late as 11 a.m.
The adoption of this policy would be most likely to decrease employees’ productivity if the employees’ job functions required them to
(A) work without interruption[c6] from other employees
(B) consult at least once a day with employees from other companies[c7]
(C) submit their work[c8] for a supervisor’s eventual approval
(D) interact frequently[c9] with each other throughout the entire workday D
(E) undertake projects that take several days[c10] to complete
这题很简单，直接贴og解释
Under what conditions could this plan cause employees' productivity to decline? Consider the job functions defined in the answer choices and determine which entails requirements that would most likely be in conflict with the proposed plan. A plan that allows a five hour range of start times would make it far more difficult for employees to coordinate their schedules. This would make it difficult, if not impossible, for employees to collaborate with each other throughout the workday and could well decrease productivity.
答案：D
6. P的鳄鱼数量近年来持续减少，主要由于捕猎。鳄鱼大量捕食一种有很高食用价值的淡水鱼，P人希望鳄鱼数量的减少能够导致更多的淡水鱼量用以消耗。但是淡水鱼的数量也减少了，即使每年的捕鱼量也没有增加。
解释
A：鳄鱼数量的减少意味着鱼可以在原本太危险的江湖生存
B：过去许多年中，P的商业捕鱼业增加了渔船数
C：鱼的主要天敌是另一种鱼，鳄鱼同样捕食这种鱼。
D：很多捕猎鳄鱼的人杀鳄鱼是因为高价的鳄鱼皮，而不是鳄鱼吃淡水鱼
E：在很多P的河流同样流过的邻国，鳄鱼由于过度捕杀面临灭绝
6. Parland's alligator population has been declining in recent years, primarily because of hunting. Alligators prey heavily on a species of freshwater fish that is highly valued as food by Parlanders, who had hoped that the decline in the alligator population would lead to an increase in the numbers of these fish available for human consumption. Yet the population of this fish species has also declined, even though the annual number caught for human consumption has not increased.
Which of the following, if true, most helps to explain the decline in the population of the fish species?
(A) The decline in the alligator population has meant that fishers can work in some parts of lakes and rivers that were formerly too dangerous[S11] .
(B) Over the last few years, Parland's commercial fishing enterprises have increased the number of fishing boats they use[S12] .
(C) The main predator of these fish is another species of fish on which alligators also prey[S13] .
(D) Many Parlanders who hunt alligators do so because of the high market price of alligator skins, not because of the threat alligators pose to the fish population[S14] .
(E) In several neighboring countries through which Parland's rivers also flow, alligators are at risk of extinction as a result of extensive hunting[S15] .
解释题，鳄鱼吃鱼，鳄鱼数量减少了，人类的消耗没有增加，但是鱼的数量减少了，问为什么。这题很简单，人的消耗没有增加，说明问题还是出在鳄鱼身上。鳄鱼的数量减少，肯定是导致鱼的数量减少的直接原因。
答案：C
备注：
[c1]The logic of the prediction has nothing to do with whether the current can be turned on and off ; rather, it is concerned with the current itself and its effects.
[c2]无
[c3]无
[c4]Correct. This statement properly identifies a problem with the prediction: It provides no reason
to believe that the electricity would affect crop plants and weeds differently.
[c5]无
[c6]无关
[c7]无关
[c8]无关
[c9]需要经常合作，所以员工不能同时到的话会影响工作
[c10]无关
[S11]如果鱼的生存范围增加，意味着可能鱼数量应该增加
[S12]文中提到了捕鱼量没有增加，干扰项
[S13]鳄鱼减少，鱼的天敌增加了，正解
[S14]解释了鳄鱼变少，无关
[S15]无关
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