【每日逻辑练习第二季】【1-13】

May97

T：27s
BG：High school students who feel that they are not succeeding in high school often drop out before graduating and go to work.
Ｐ：Last year, however, the city’s high school dropout rate was significantly lower than the previous year’s rate. Ｃ：This is encouraging evidence that the program instituted two years ago to improve the morale of high school students has begun to take effect to reduce dropouts.
Weaken：
(A) There was a recession that caused a high level of unemployment in the city.--->irreverent--->correct 另一个原因
(B) The morale of students who dropped out of high school had been low even before they reached high school.--->irrevrent
(C) As in the preceding year, more high school students remained in school than dropped out.--->support
(D) High schools in the city established placement offices to assist their graduates in obtaining employment.--->correct. 另一个原因这里只是说明dropout rate会提高，irreverent
(E) The antidropout program was primarily aimed at improving students’ morale in those high school with the highest dropout rates.--->support

T: 26s
C: An overly centralized economy, not the changes in the climate, is responsible for the poor agricultural production in Country X
P: since its new government came to power.  
P: Neighboring Country Y has experienced the same climatic conditions, but while agricultural production has been falling in Country X, it has been rising in Country Y.
Weaken: 1) X Y种的植物不同，受到天气影响不同; 2) the new government 并没有centralized economy
(A) Industrial production also is declining in Country X.--->不一定
(B) Whereas Country Y is landlocked, Country X has a major seaport.--->???BD选项比较纠结。。
(C) Both Country X and Country Y have been experiencing drought conditions.--->support
(D) The crops that have always been grown in Country X are different from those that have always been grown in Country Y.--->correct
(E) Country X's new government instituted a centralized economy with the intention of ensuring an equitable distribution of goods.--->support

T: 26s
P: Generally scientists enter their field with the goal of doing important new research and accept as their colleagues those with similar motivation.  
C: Therefore, when any scientist wins renown as an expounder of science to general audiences, most other scientists conclude that this popularizer should no longer be regarded as a true colleague.
FA: research scientist的目的改变了
(A) serious scientific research is not a solitary activity, but relies on active cooperation among a group of colleagues--->irreverent
(B) research scientists tend not to regard as colleagues those scientists whose renown they envy--->irreverent
(C) a scientist can become a famous popularizer without having completed any important research--->irreverent
(D) research scientists believe that those who are well known as popularizers of science are not motivated to do important new research--->correct
(E) no important new research can be accessible to or accurately assessed by those who are not themselves scientists --->irreverent

T: 31s
A company's two divisions performed with remarkable consistency over the past three years:  in each of those years,
the pharmaceuticals division has accounted for roughly 20 percent of dollar sales and 40 percent of profits,
and the chemicals division for the balance.
Infer:
(A) Total dollar sales for each of the company's divisions have remained roughly constant.--->no
(B) The pharmaceuticals division has faced stiffer competition in its markets than has the chemicals division.--->no
(C) The chemicals division has realized lower profits per dollar of sales than has the pharmaceuticals division.--->correct
(D) The product mix offered by each of the company's divisions has remained unchanged.--->no
(E) Highly profitable products accounted for a higher percentage of the chemicals division's sales than of those of the pharmaceuticals division.--->no

T: 33s
P: The technological conservatism of bicycle manufacturers is a reflection of the kinds of demand they are trying to meet.  
P: The only cyclists seriously interested in innovation and willing to pay for it are bicycle racers.  
C: Therefore, innovation in bicycle technology is limited by what authorities will accept as standard for purposes of competition in bicycle races.
FA:
(A) The market for cheap, traditional bicycles cannot expand unless the market for high-performance competition bicycles expands.--->irreverent
(B) High-performance bicycles are likely to be improved more as a result of technological innovations developed in small workshops than as a result of technological innovations developed in major manufacturing concerns.--->irreverent
(C) Bicycle racers do not generate a strong demand for innovations that fall outside what is officially recognized as standard for purposes of competition.--->correct
(D) The technological conservatism of bicycle manufacturers results primarily from their desire to manufacture a product that can be sold without being altered to suit different national markets.--->irreverent
(E) The authorities who set standards for high-performance bicycle racing do not keep informed about innovative bicycle design.--->irreverent