Prep19

19.   (27788-!-item-!-188;#058&003653)

With a record number of new companies starting up in Derderia and with previously established companies adding many jobs, a record number of new jobs were created last year in the Derderian economy.  This year, previously established companies 是指去年就存在的么？will not be adding as many new jobs overall as such companies added last year.  Therefore, unless a record number of companies start up this year, Derderia will not break its record for new jobs created.

Which of the following is an assumption on which the argument relies?

(A) Each year, new companies starting up create more new jobs overall than do previously established companies.

(B) Companies established last year will not add a greater number of jobs overall this year than they did last year.

(C) This year, the new companies starting up will not provide substantially more jobs per company than did new companies last year.

(D) This year, the overall number of jobs created by previously established companies will be less than the overall number of jobs lost at those companies.

(E) The number of jobs created in the Derderian economy last year was substantially larger than the number of jobs lost last year.

我还想不通答案为什么是Ｃ．请哪位ＮＮ解释一下．谢谢～

去年：a record新公司成立+旧公司新岗位产生=a record的新岗位

今年：旧公司新增岗位下降

结论：为了打破去年的record，只有再成立a record的新公司

ASS：C取非就是新公司的岗位比去年的多，因此不用再增加a record的新公司就可以打破去年的记录。削弱结论