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[GMAT逻辑集训营] GMAT逻辑8天一星强化练习day1【200-500提升至600-640】

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Yvonne 发表于 2015-7-7 19:15:43 | 显示全部楼层 |阅读模式
本帖最后由 Yvonne 于 2015-7-27 19:10 编辑

GMAT逻辑8天一星强化练习day1(total:8天)
8天_副本.jpg

学习安排
学习内容:
  OG
PREP
GWD
备考时间:第一天
做好准备,我们一起加加油

学习目标
                                                    吃掉逻辑
                                              强化提升,大胆阔步迈向我们的强备考二星级的练习

今日练习

做GMAT逻辑的时候一定要自己做好笔记,对错的题目进行整理和分类,一些固定搭配也要整理下来,虽然不是考点,但有时候也可据此推断答案,这种方法对短期提高GMAT逻辑水平很重要。做GMAT逻辑题的时候要仔细分析选项,不轻易的予以排除,有很多时候正确答案往往就是你忽略掉的那个。

接下来~~~就开始我们学习吧~~~
答案回复即可见
游客,如果您要查看本帖隐藏内容请回复

记得整理笔记哦!!

第一部分是OG习题

4.
According to a prediction of the not-so-distantfuture published in 1940, electricity would revolutionize agriculture.Electrodes would be inserted into the soil, and the current between them wouldkill bugs and weeds and make crop plants stronger.
Which of the following, if true, moststrongly indicates that the logic of the prediction above is flawed?
A In order for farmers to avoid electric shockwhile working in the fields, the current could be turned off at such timeswithout diminishing the intended effects.
B If the proposed plan for using electricitywere put into practice, farmers would save on chemicals now being added to thesoil.
C It cannot be taken for granted that the use ofelectricity is always beneficial.
D Since weeds are plants, electricity wouldaffect weeds in the same way as it would affect crop plants.
E Because a planting machine would need to avoidcoming into contact with the electrodes, new parts for planting machines wouldneed to be designed.


5.
A company is considering changing itspolicy concerning daily working hours. Currently, this company requires allemployees to arrive at work at 8 a.m. The proposed policy would permit eachemployee 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 mostlikely to decrease employees' productivity if the employees' job functionsrequired them to
A work without interruption from other employees
B consult at least once a day with employeesfrom other companies
C submit their work for a supervisor's eventualapproval
D interact frequently with each other throughoutthe entire workday
E undertake projects that take several days tocomplete

6.
Parland'salligator population has been declining in recent years, primarily because ofhunting. Alligators prey heavily on a species of freshwater fish that is highlyvalued as food by Parlanders, who had hoped that the decline in the alligatorpopulation would lead to an increase in the numbers of these fish available forhuman consumption. Yet the population of this fish species has also declined,even though the annual number caught for human consumption has not increased.
Which ofthe following, if true, most helps to explain the decline in the population ofthe fish species?
A The decline in the alligator population has meant that fishers canwork in some parts of lakes and rivers that were formerly too dangerous.
B Over the last few years, Parland's commercial fishing enterprises haveincreased the number of fishing boats they use.
C The main predator of these fish is another species of fish on whichalligators also prey.
D Many Parlanders who hunt alligators do so because of the high marketprice of alligator skins, not because of the threat alligators pose to the fishpopulation.
E In several neighboring countries through which Parland's rivers alsoflow, alligators are at risk of extinction as a result of extensive hunting.

9.
While many people think of geneticmanipulation of food crops as being aimed at developing larger and larger plantvarieties, some plant breeders have in fact concentrated on discovering orproducing dwarf varieties, which are roughly half as tall as normal varieties.
Which of the following would, if true, mosthelp to explain the strategy of the plant breeders referred to above?
A Plant varieties used as food by some are used as ornamentals byothers.
B The wholesale prices of a given crop decrease as the supply of itincreases.
C Crops once produced exclusively for human consumption are often nowused for animal feed.
D Short plants are less vulnerable to strong wind and heavy rains.
E Nations with large industrial sectors tend to consume more processedgrains.

12.
Which of the followingmost logically completes the passage?
Most bicycle helmets provide goodprotection for the top and back of the head, but little or no protection forthe temple regions on the sides of the head. A study of head injuries resultingfrom bicycle accidents showed that a large proportion were caused by blows tothe temple area. Therefore, if bicycle helmets protected this area, the risk ofserious head injury in bicycle accidents would be greatly reduced, especiallysince .
A among the bicyclists included in the study's sample of head injuries,only a very small proportion had been wearing a helmet at the time of theiraccident
B even those bicyclists who regularly wear helmets have a poorunderstanding of the degree and kind of protection that helmets afford
C a helmet that included protection for the temples would have to besomewhat larger and heavier than current helmets
D the bone in the temple area is relatively thin and impacts in thatarea are thus very likely to cause brain injury
E bicyclists generally land on their arm or shoulder when they fall tothe side, which reduces the likelihood of severe impacts on the side of thehead

14.
Wood smoke contains dangerous toxins thatcause changes in human cells. Because wood smoke presents such a high healthrisk, legislation is needed to regulate the use of open-air fires andwood-burning stoves.
Which of the following, if true, providesthe most support for the argument above?
A The amount ofdangerous toxins contained in wood smoke is much less than the amount containedin an equal volume of automobile exhaust.
B Within thejurisdiction covered by the proposed legislation, most heating and cooking isdone with oil or natural gas.
C Smoke produced bycoal-burning stoves is significantly more toxic than smoke from wood burningstoves.
D No significantbeneficial effect on air quality would result if open-air fires were bannedwithin
the jurisdiction covered by the proposedlegislation.
E In valleys wherewood is used as the primary heating fuel, the concentration of smoke results
in poor air quality.

第二部分是prep07题

1.   
Although fullerenes--spherical molecules made entirely ofcarbon--were first found in the laboratory, they have since been found innature, formed in fissures of the rare mineral shungite.  Since laboratory synthesis of fullerenesrequires distinctive conditions of temperature and pressure, this discoveryshould give geologists a test case for evaluating hypotheses about the state ofthe Earth's crust at the time these naturally occurring fullerenes were formed.
Which of the following, if true, most seriouslyundermines the argument?
(A) Confirming that the shungite genuinely containedfullerenes took careful experimentation.
(B) Some fullerenes have also been found on the remainsof a small meteorite that collided with a spacecraft.
(C) The mineral shungite itself contains large amounts ofcarbon, from which the fullerenes apparently formed.
(D) The naturally occurring fullerenes are arranged in apreviously unknown crystalline structure.
(E) Shungite itself is formed only under distinctiveconditions.

3.   
The prairie vole, a small North American grasslandrodent, breeds year-round, and a group of voles living together consistsprimarily of an extended family, often including two or more litters.  Voles commonly live in large groups from lateautumn through winter; from spring through early autumn, however, most voleslive in far smaller groups.  The seasonal variation in group size can probably beexplained by a seasonal variation in mortality among young voles.
Which of the following, if true, provides the strongestsupport for the explanation offered?
(A) It is in the spring and early summer that prairievole communities generally contain the highest proportion of young voles.
(B) Prairie vole populations vary dramatically in sizefrom year to year.
(C) The prairie vole subsists primarily on broad-leavedplants that are abundant only in spring.
(D) Winters in the prairie voles' habitat are oftenharsh, with temperatures that drop well below freezing.
(E) Snakes, a major predator of young prairie voles,are active only from spring through early autumn.

4.   
A popular beach has long had a dolphin feeding program inwhich fish are given to dolphins several times a day; many dolphins get as muchas half of their food each day there. Although dolphins that first benefit from the program as adults arehealthy and long-lived, their offspring have a lower life expectancy thanoffspring of dolphins that feed exclusively in the wild.
Which of the following, if true, most helps to explainthe lower life expectancy of offspring of dolphins feeding at the beachcompared to other young dolphins?
(A) Sharks that prey on dolphins are less common in theopen seas off the beach than in many other areas of the open seas wheredolphins congregate.
(B) Many of the adult dolphins that feed at the beach arefemales that nurse their offspring there.
(C) The fish given to the dolphins at the beach are thesame types of fish that dolphins typically catch in the wild.
(D) Many dolphins that feed at the beach with theiroffspring come to the beach only a few times a month.
(E) Adult dolphins that feed at the beach spend much lesstime teaching their offspring how to catch fish in the wild than do other adultdolphins.

5.   
Tiger sharks are common in the waters surrounding TenareIsland.  Usually tiger sharks feed onsmaller sharks, but sometimes they have attacked tourists swimming and surfingat Tenare's beaches.  This has hurtTenare's tourism industry, which is second only to its fishing industry inannual revenues.  In order to help theeconomy, therefore, the mayor of the island has proposed an ongoing program tokill any tiger sharks within a mile of the beaches.
Which of the following, if true, most strongly calls intoquestion the likelihood that implementation of the mayor's proposal will havethe desired consequence?
(A) Even if not all the tiger sharks that come close tothe beaches are killed, the existence of the program would reassure tourists.
(B) Business owners who depend on tourism are willing topay most of the cost of implementing the program.
(C) Tourists come to Tenare Island for its beaches, eventhough the island features a number of other tourist attractions.
(D) The small sharks on which tiger sharks prey feed onfish that are commercially important to the island's fisheries.
(E) Not all tourists who come to Tenare Island enjoyswimming or surfing.

6.   
The country of Ertland has never imported apples in anysignificant quantity because consumers there generally prefer the uniquetexture of Ertland-grown apples. Nevertheless, apple growers from Kosolia, a neighboring country, plan tosell their apples in Ertland by selling Kosolia-grown apples at half the priceof local apples and promoting them as a nourishing, low-cost alternative.
Which of the following, if true, casts most doubt on theviability of the plan by Kosolia's apple growers to sell their apples inErtland?
(A) Most of the varieties of apples grown in Ertland wereoriginally derived from common Kosolian varieties.
(B) Consumers in Ertland tend to spend about the sameproportion of their income on fresh fruits and vegetables as do consumers inKosolia.
(C) At times in the past, Ertland has exportedsignificant quantities of apples to Kosolia.
(D) Some varieties of apples grown in Kosolia can beharvested throughout most of the year, whereas the varieties grown in Ertlandcan be harvested only during two months of the year.
(E) Profiles of Ertland-grown apples are high enoughin Ertland that growers, wholesalers, and retailers there could easily affordto reduce the price at which these apples are sold.

7.   
As part of major renovations to Flowertown's Main Street trainstation, consultants to the train company proposed movingthe station's entrance from its current valuable Main Street location to alow-rent adjoining side street and then leasing the high-rent entrance space toretail businesses. In that way, the traincompany could easily pay for those and all other proposed renovations withoutnegative impact on its tight budget.
Which of the following, if true, would most stronglysupport the consultants' proposal?
(A) More train commuters are employed in businesseslocated on Main Street than in businesses located on the adjoining side street.
(B) A reliable survey of Flowertown's commuters showedthat virtually none of them would use the train any less frequently if thestation's entrance were moved.
(C) The high-rent block of Flowertown's Main Streetincludes several buildings whose owners currently seek to replace long-standingtenants lost in recent months.
(D) If the station's entrance were moved, the traincompany would need to begin costly renovations to its Main Street entrancespace.
(E) Ridership on Flowertown trains declined onlyslightly from 1970 to 1985 while other train companies lost large numbers ofcommuters.

8.   
Automobile Dealer's Advertisement:
The Highway Traffic Safety Institute reports that the PZ1000 has the fewest injuries per accident of any car in its class.  This shows that the PZ 1000 is one of thesafest cars available today.
Which of the following, if true, most seriously weakensthe argument in the advertisement?
(A) The Highway Traffic Safety Institute report listedmany cars in other classes that had more injuries per accident than did the PZ1000.
(B) In recent years many more PZ 1000s have been soldthan have any other kind of car in its class.
(C) Cars in the class to which the PZ 1000 belongs aremore likely to be involved in accidents than are other types of cars.
(D) The difference between the number of injuries peraccident for the PZ 1000 and that for other cars in its class is quitepronounced.
(E) The Highway Traffic Safety Institute issuesreports only once a year.

第三部分是GWD题

13.
In the United States, of the people who moved from onestate to another when they retired, the percentage who retired to Florida has decreased bythree percentage points over the past ten years.  Since many local businesses in Florida cater toretirees, this decline is likely to have a noticeably negative economic effecton these businesses.
Which ofthe following, if true, most seriously weakens the argument?
A.   Florida attractsmore people who move from one state to another when they retire than does anyother state.
B.   The number of people who move out of Florida to acceptemployment in other states has increased over the past ten years.
C.   There are far more local businesses in Florida that cater totourists than there are local businesses that cater to retirees.
D.   The total number of people who retired andmoved to another state for their retirement has increased significantly overthe past ten years.
E.    The number of people who left Florida when theyretired to live in another state was greater last year than it was ten yearsago.

14.
That theapplication of new technology can increase the productivity of existing coalmines is demonstrated by the case of Tribnia’s coal industry.  Coal output per miner in Tribnia is doublewhat it was five years ago, even though no new mines have opened.
Which ofthe following can be properly concluded from the statement about coal outputper miner in the passage?
A.   If the number of miners working in Tribniancoal mines has remained constant in the past five years, Tribnia’s total coalproduction has doubled in that period of time.
B.   Any individual Tribnian coal mine thatachieved an increase in overall output in the past five years has alsoexperienced an increase in output per miner.
C.   If any new coal mines had opened in Tribniain the past five years, then the increase in output per miner would have beeneven greater than it actually was.
D.   If any individual Tribnian coal mine has notincreased its output per miner in the past five years, then that mine’s overalloutput has declined or remained constant.
In Tribnia the cost of producing a given quantity ofcoal has declined over the past five years.

18.
It isillegal to advertise prescription medications in Hedland except in professionalmedical journals or by mail directly to physicians.  A proposed law would allow generaladvertising of prescription medications. Opponents object that, in general, laypersons lack the specializedknowledge to evaluate such advertisements and might ask their physicians forinappropriate medications.  But sincephysicians have the final say as to whether to prescribe a medication for apatient, the objection provides no grounds for concern.
Which ofthe following would it be most useful to establish in order to evaluate theargument?
A.   Whether nonprescription medications caninteract with and block the action of any prescription medications that couldbe advertised to the general public
B.   Whether most prescription medicationadvertisements directed at the general public would be advertisements forrecently developed medications newly available by prescription
C.   Whether prescription medicationadvertisements directed at the general public would appear on television andradio as well as in print
D.   Whether physicians are more likely to payattention to advertising directed to the general public than to advertisingdirected to physicians
E.    Whether physicians are likely to succumb topressure from patients to prescribe inappropriate medications

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1.阅读与逻辑也很重要啊,快来参加语法与语法的基础学习~

2. 除了上述用到的资料,此阶段适合大家使用练习的资料还有这些哦~

3. 同时备考托福的同学,更多托福集训看过来哦!
托福阅读14天训练营【起始分:0-14分;目标分:15-21分】
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NijiaViana 发表于 2015-11-9 20:55:24 | 显示全部楼层
大家一起加油
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hahainso 发表于 2016-5-30 23:58:12 | 显示全部楼层
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