Re: [語文] 請各位大大幫忙看一下兩題CR，謝謝~
看板GMAT作者prettyting (get a food in the door)時間15年前 (2008/12/04 15:12)推噓0(0推 0噓 0→)留言0則, 0人參與討論串3/3 (看更多)
※ 引述《surfingdream (GMATing)》之銘言：
: ※ 引述《kimoqueen (AT苦海何時能解脫~ @_@)》之銘言：
: : The population of peregrine falcons declined rapidly during
: : the 1950’s and 1960’s and reached an all-time low in the early 1970’s.
: : The decline was attributed by scientists to the widespread use of the
: : pesticide DDT in rural areas.
: : Which of the following, if true, gives the strongest support
: : to the scientists claim?
: : (A) DDT was not generally in use in areas devoted to heavy industry.
: : (B) In the time since the use of DDT was banned in 1972,
: : the population of peregrine falcons has been steadily increasing.
: : (C) Peregrine falcons, like other birds of prey, abandon eggs that
: : fallen out of the nest, even if the eggs remain intact.
: : (D) Starling, house sparrows, and blue jays-birds the peregrine
: : falcon prey on—were not adversely affected by DDT in their habitats.
: : (E) Other birds of prey, such as the osprey, the bald cage, and
: : the brown pclican, are found in the same area as is the peregrine falcon.
: : 答案是A 但我選B
: 這題重點是要支持 科學家的claim：DDT是大量使用在 rural areas
: (A)選項 把not去掉，即DDT是用在重工業的地方，反駁郊區，加上not剛好是支持
: 不過這個選項也有點缺陷，因為他也沒提到 rural areas是否就沒有重工業....
: (B)即使population穩定成長，還是不足以支持DDT是用在郊區
這題我也選B
這題主要是由果推因，若"peregrine falcons數量下降"視為B
"廣泛使用DDT"視為A
若B-->A 是正確
那B選項就是"對照組"的方式來支持此推論，對照組支持是以不同實驗推出不同結果，
禁止用DDT(不同實驗)所以使peregrine falcons增加(不同結果)
所以我選B選項
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