Surveys in Domorica indicate that only 10 percent of Domoricans in their twenties read a newspaper regularly, while more than half of all Domoricans over thirty read a newspaper regularly. Although Domoricans in their twenties constitute a large proportion of the population, newspaper publishers nonetheless predict that ten years from now, the percentage of Domoricans who regularly read a newspaper will probably be no lower than it is today.
Which of the following, if true, provides the strongest grounds for the newspaper publishers' prediction?
Surveys in Domorica indicate that only 10 percent of Domoricans in their twenties read a newspaper regularly, while more than half of all Domoricans over thirty read a newspaper regularly. Although Domoricans in their twenties constitute a large proportion of the population, newspaper publishers nonetheless predict that ten years from now, the percentage of Domoricans who regularly read a newspaper will probably be no lower than it is today.
Which of the following, if true, provides the strongest grounds for the newspaper publishers’ prediction?
A.The number of Domoricans in their twenties is less than the number of Domoricans over thirty.
B.The number of newspapers in Domorica has been gradually increasing over the past several decades.
C.The proportion of Domoricans in their twenties who regularly read a newspaper has always been low. D.The surveys defined a regular reader of a newspaper as someone who reads a newspaper more than twice a week.
E.The proportion of Domoricans who regularly read a newspaper was higher 20 years ago than it is today. 不明白为什么选C呢
10年以后,20多岁的人变成了30多岁,虽然30多岁的人看报纸比例高,但是现在(10年前)的情况中,30多岁以上的人看报纸的比例也已经高了,怎么能保证10年后总体的看报纸的人不会减少呢。我的意思是,不管20岁的人看报纸比例如何,到了30以上看报纸比例都是增加的,那么C的作用体现在哪里呢? Correct. This indicates that the 10 percent figure for those in their twenties, in contrast to those over thirty, is merely the continuation of an existing pattern and therefore provides no reason to think that the proportion of Domoricans regularly reading newspapers will diminish over the next ten years. 这个是官方解释,我不大明白什么意思
10年以后,20多岁的人变成了30多岁,虽然30多岁的人看报纸比例高,但是现在(10年前)的情况中,30多岁以上的人看报纸的比例也已经高了,怎么能保证10年后总体的看报纸的人不会减少呢。我的意思是,不管20岁的人看报纸比例如何,到了30以上看报纸比例都是增加的,那么C的作用体现在哪里呢? Correct. This indicates that the 10 percent figure for those in their twenties, in contrast to those over thirty, is merely the continuation of an existing pattern and therefore provides no reason to think that the proportion of Domoricans regularly reading newspapers will diminish over the next ten years. 这个是官方解释,我不大明白什么意思
-- by 会员 renyu199014 (2012/8/4 8:37:20)
[/quote]C的作用在于,告诉我们20多岁的人一直都不怎么看报纸,所以不管是现在还是10年后,20多岁人这一部分人看报纸的人差别不大,要比较的就是30多岁的看报纸的人数。现在20多岁的人占人口比例大,所以10年之后,当这一批20多岁人进入30岁之后,他们对30多岁的人数造成了较大的贡献。从而加强了the proportion of Domoricans regularly reading newspapers不会低于10年前。
10年以后,20多岁的人变成了30多岁,虽然30多岁的人看报纸比例高,但是现在(10年前)的情况中,30多岁以上的人看报纸的比例也已经高了,怎么能保证10年后总体的看报纸的人不会减少呢。我的意思是,不管20岁的人看报纸比例如何,到了30以上看报纸比例都是增加的,那么C的作用体现在哪里呢? Correct. This indicates that the 10 percent figure for those in their twenties, in contrast to those over thirty, is merely the continuation of an existing pattern and therefore provides no reason to think that the proportion of Domoricans regularly reading newspapers will diminish over the next ten years. 这个是官方解释,我不大明白什么意思
-- by 会员 renyu199014 (2012/8/4 8:37:20)
[/quote]C的作用在于,告诉我们20多岁的人一直都不怎么看报纸,所以不管是现在还是10年后,20多岁人这一部分人看报纸的人差别不大,要比较的就是30多岁的看报纸的人数。现在20多岁的人占人口比例大,所以10年之后,当这一批20多岁人进入30岁之后,他们对30多岁的人数造成了较大的贡献。从而加强了the proportion of Domoricans regularly reading newspapers不会低于10年前。