请教大全-5-11,大全-5-19,大全-5-20

joywzy

11. Red blood cells in which the malarial-fever parasite resides are eliminated from a person’s body after 120 days. Because the parasite cannot travel to a new generation of red blood cells, any fever that develops in a person more than 120 days after that person has moved to a malaria-free region is not due to the malarial parasite.

Which of the following, if true, most seriously weakens the conclusion above?

(A) The fever caused by the malarial parasite may resemble the fever caused by flu viruses.
(B) The anopheles mosquito, which is the principal insect carrier of the malarial parasite, has been eradicated in many parts of the world.
(C) Many malarial symptoms other than the fever, which can be suppressed with antimalarial medication, can reappear within 120 days after the medication is discontinued.
(D) In some cases, the parasite that causes malarial fever travels to cells of the spleen, which are less frequently eliminated from a person’s body than are red blood cells.
(E) In any region infested with malaria-carrying mosquitoes, there are individuals who appear to be immune to malaria.

答案,我选C.

19. Recent estimates predict that between 1982 and 1995 the greatest increase in the number of people employed will be in the category of low-paying service occupations. This category, however, will not increase its share of total employment, whereas the category of high-paying service occupations will increase its share.

If the estimates above are accurate, which of the following conclusions can be drawn?

(A) In 1982 more people were working in low-paying service occupations than were working in high-paying service occupations.
(B) In 1995 more people will be working in high-paying service occupations than will be working in low-paying service occupations.
(C) Nonservice occupations will account for the same share of total employment in 1995 as in 1982.
(D) Many of the people who were working in low-paying service occupations in 1982 will be working in high-paying service occupations by 1995.
(E) The rate of growth for low-paying service occupations will be greater than the overall rate of employment growth between 1982 and 1995.

答案:A,我不知这个答案怎么来的,能讲讲吗?我选了E.

20. For a local government to outlaw all strikes by its workers is a costly mistake, because all its labor disputes must then be settled by binding arbitration, without any negotiated public-sector labor settlements guiding the arbitrators. Strikes should be outlawed only for categories of public-sector workers for whose services no acceptable substitute exists.

The statements above best support which of the following conclusions?

(A) Where public-service workers are permitted to strike, contract negotiations with those workers are typically settled without a strike.
(B) Where strikes by all categories of pubic-sector workers are outlawed, no acceptable substitutes for the services provided by any of those workers are available.
(C) Binding arbitration tends to be more advantageous for public-service workers where it is the only available means of settling labor disputes with such workers.
(D) Most categories of public-sector workers have no counterparts in the private sector.
(E) A strike by workers in a local government is unlikely to be settled without help from an arbitrator.

答案:C,C出现了一个绝对化的词nly,可题干中并没有.
我选E,(E)==>A strike by workers in a local government is likely to be settled with help from an arbitrator.这是题干说的啊?!

谢谢.

shany

11.The conclusion is that any fever developed 120 days later is not due to the malarial parasite. It does not deny the possibilities of other symptoms and thus is consistent with C. The answer D  is correct, for it implies a possibility that the mentioned  fever may occur.

19. A math question. Hope somebody can make a clear formula here.
20. From the first sentence, all  labor disputes in a local goverment must then be settled by binding arbitration.That means the arbitration is the only possible means.Public-service workers are included in the goverment laborers, and of couse are also subject to  the arbitration.
(E) Substitutes 'strike' for 'dispute'. Strikes has supposedly been outlawed.

joywzy

I see, thank u, shany!

In T 20, ETS often substitute some words for others in question in the conclusion or inferr question. Unfortunately, i usually failed to detect such substutition.

[此贴子已经被作者于2003-4-17 15:44:16编辑过]

joywzy

以下是引用joywzy在2003-4-16 16:30:00的发言：

19. Recent estimates predict that between 1982 and 1995 the greatest increase in the number of people employed will be in the category of low-paying service occupations. This category, however, will not increase its share of total employment, whereas the category of high-paying service occupations will increase its share.

If the estimates above are accurate, which of the following conclusions can be drawn?

(A) In 1982 more people were working in low-paying service occupations than were working in high-paying service occupations.
(B) In 1995 more people will be working in high-paying service occupations than will be working in low-paying service occupations.
(C) Nonservice occupations will account for the same share of total employment in 1995 as in 1982.
(D) Many of the people who were working in low-paying service occupations in 1982 will be working in high-paying service occupations by 1995.
(E) The rate of growth for low-paying service occupations will be greater than the overall rate of employment growth between 1982 and 1995.

答案:A,我不知这个答案怎么来的,能讲讲吗?我选了E.

谢谢.

Pls help me solve the above math question. Thanks.

hexin

19 题 甚 烦 ， 我 的 方 法 是 ：
low(82) represents the number of low-paying occupations in 1982,
total(82) represents the total number of occupations in 1982,
A represents the increase of low-paying occupations,
B represents the increase of high-paying occupations,
low(82)/total(82)=[low(82)+A]/total(95)
high(82)/total(82)<[high(82)+B]/total(95)
at last, the result become: high(82)therefore high(82)should anybody have better solution, please don't hesitate to tell us.

joywzy

ha,it is too complex. i have to give it up.

goodwaiter

19题

文章说：在82至95期间，低收入的人数增加最多，然而并没有增加所占的比重，相反高收入的比重增加了。举例：82年时低收入与高收入是10比一，那么为保持二者之比不变，高收入增加一个，低收入得增加十个，那么只要低收入增加的不到高收入人群的十倍，高收入的比重就会上升。

sch

19题

文
章说：在82至95期间，低收入的人数增加最多，然而并没有增加所占的比重，相反高收入的比重增加了。举例：82年时低收入与高收入是10比一，那么为保
持二者之比不变，高收入增加一个，低收入得增加十个，那么只要低收入增加的不到高收入人群的十倍，高收入的比重就会上升。

++++++++++++++++++++++++++++++++++++++++++++++

楼上的牛人啊，举重若轻，我一开始想的很复杂的题目，被你简单一说就想通了...多谢！

90 穷人                                     10个富人

99 穷人  (增加9）                    11个富人 （增加1）

108穷人 (增18）                      12 富人       （增2）

可以看出虽然穷人增加18个之多，但是富人只要增加3个，就能改变share

蓝狮爱我

第19题：文说the greatest increase in the number of people employed will be in the category of low-paying service occupations.。就是低收入区人数增加的最多，比高收入增加的人多。但后文说This category, however, will not increase its share of total employment, whereas the category of high-paying service occupations will increase its share.也就是说虽然低区人增加的多，其总的份额没怎么增加，反而是高收入区比例增加了。
这好比说低区人多了10001人，高区增加了10000人。然而能造成低区份额不变，高区份额增加的情况只有当低区本来人数众多，而高区本来人数很少，才能造成这10000人给高区带来了巨大变化，而给地区带来的变化不算太大。