看了這麼多nn們的討論,A和E都有其缺點和道理,樓上說的沒錯,考試時還是要相信自己的感覺猜一個。
另外,雖然說本人一向鄙視用辜狗找答案,但今天手賤請辜狗大神找了一下,竟然找到這題的來源,一篇在闡述荷士登這種牛有多牛的文章(好繞口阿...)。貼出來給大家參考一下。
When it comes to milk production, nothing beats Holsteins. For the farmer who takes care to keep them cool, sated with high-energy chow, and milked regularly—often under the management of a sophisticated computer—these familiar black-and-white cows produce an average of 2,275 gallons of milk each per year. The average Brown Swiss, in contrast, produced only 1,820 gallons last year, and a Jersey less than 1,600.
原文網址:http://www.sciencenews.org/pages/sn_arc97/10_4_97/bob1.htm
再次重申本人立場:google找的東西不能作為答題的依據,大家看看就好。 |