本月机经：is likely to 能做判断词吗？nn进~

小月公主

Escalating worldwide demand for corn has led to a sharp increase in the market price of corn, and corn prices are likely to remain high. Corn is extensive used as feed for livestock, and because profit margins are tight in the livestock business, many farmers are expected to leave the business. With fewer suppliers, meat prices will surely rise. Nonetheless, observers expect an immediate short-term decrease in meat prices.

Which of the following, if true, most helps to justify the observers’ expectation?

1. The increase in corn prices is due more to a decline in the supply of corn than to a growth in demand for it.
           
2. Generally, farmers who are squeezed out of the livestock business send their livestock to market much earlier than they otherwise would.
           
3. Some people who ate meat regularly in the past are converting to diets that include little or no meat.
           
4. As meat prices rise, the number of livestock producers is likely to rise again.
           
5. Livestock producers who stay in the business will start using feed other than corn more extensively than they did in the past.

answer: b

关于D，除了nn们讲的那些理由。我想问下：可以不可以从 is likely to 去判断？

有没有可能上升与上不上升无关系。

e.g can rise

请问这样理解可以吗？

necroosu

题目问如何解释mmedate short-term影响，任何表达临时和短期效果的就是B（这个估计没啥分歧）。

至于D，要从句意理解，这里说的是个长期的影响，属于无关项。仅从is likely to太冒险了也不科学。

小月公主

恩，想明白了~

顺便提醒楼上另一个小技巧：

 含if, unless, as long as ， as等连词的选项，在归纳题中可能正确（是选项的前提必然成立）；在演绎题中必错（给出无关前提）

演绎：只要有如果，只要的意思是错的。     （特别注：when，after，before，都不是）

所以，D因此也不对。