十月梦队逻辑讨论专贴，请NN多多支持！！

祈晴坊主

哦
懂了
请GG再帮忙分析下面几道啊

小晴无限感激ing~~~~~~~~~~~

joice

17IV-9.
http://forum.chasedream.com/dispbbs.asp?boardID=24&ID=12237

春天的花儿会开

That's a good idea!!

以下是引用fyhllj在2003-9-17 13:24:00的发言：
看来，最近大家对lsat很感兴趣，我们很快就会在逻辑区开展一个lsat逻辑题的讨论学习活动。

joice

以下是引用祈晴坊主在2003-9-18 11:30:00的发言：
11. Water vapor evaporated from the ocean contains a greater proportion of oxygen-16 and a smaller proportion of the heavier oxygen-18 than does seawater. Normally, this phenomenon has no effect on the overall composition of the ocean, because evaporated seawater returns to the ocean through precipitation. During an ice age, however, a large amount of precipitation falls on ice caps, where it is trapped as ice.

Which one of the following conclusions about a typical ice age is most strongly supported by the statements above?

(A) The proportions of oxygen-16 and oxygen-18 are the same in vapor from seawater as in the seawater itself.

(B) The concentration of oxygen-18 in seawater is increased.

(C) Rain and snow contain relatively more oxygen-16 than they do in interglacial periods.

(D) During the ice age, more of the Earth's precipitation falls over land than falls over the ocean.

(E) The composition of seawater changes more slowly than it does in interglacial periods.

这题选B
可我觉得，The concentration of oxygen-18 应该是在ice里面多，才支持啊
因为seawater里面不是本身就多吗

Say, sea water contains  oxygen-16 and  oxygen-18. During ice age, vapor doesn't return to sea, greater proportion of oxygen-16 lost while ox-18 only  lost smaller proportion, so proportion of Ox-18 in seawater increases.

joice

以下是引用祈晴坊主在2003-9-18 11:33:00的发言：
18. In the United States proven oil reserves-the amount of oil considered extractable from known fields-are at the same level as they were ten years ago. Yet over this same period no new oil fields of any consequence have been discovered, and the annual consumption of domestically produced oil has increased.

Which one of the following, if true best reconciles the discrepancy described above?

(A) Over the past decade the annual consumption of imported oil has increased more rapidly than that of domestic oil in the United States.

(B) Conservation measures have lowered the rate of growth of domestic oil consumption from what it was a decade ago.

(C) Oil exploration in the United States has slowed due to increased concern over the environmental impact of such exploration.

(D) The price of domestically produced oil has fallen substantially over the past decade.

(E) Due to technological advances over the last decade, much oil previously considered unextractable is now considered extractable.

答案是选E
我觉得A 也没错啊
进口多了
即使开采的少，也能增加数量啊

MM, the question ask you to explain why domestic oil production increased.

[此贴子已经被作者于2003-9-19 8:43:56编辑过]

祈晴坊主

以下是引用joice在2003-9-18 12:45:00的发言：
17IV-9.
http://forum.chasedream.com/dispbbs.asp?boardID=24&ID=12237

我知道D为什么不对了
可还是想不通A为什么对

A好象是支持，不是削弱啊

祈晴坊主

以下是引用joice在2003-9-19 8:24:00的发言：
Say, sea water contains  oxygen-16 and  oxygen-18. During ice age, vapor doesn't return to sea, greater proportion of oxygen-16 lost while ox-18 only  lost smaller proportion, so proportion of Ox-18 in seawater increases.

i've got it

祈晴坊主

set 17,part two

8. The Buysville Chamber of Commerce recently met to discuss a proposal to beautify the Baysville area's treeways by relocating power lines, adding landscaping and removing billboards. At the meeting Mary Simms who was a representing an outdoor advertising company declared "Billboards are the basis of our business. If they are torn down, our ability to earn a living will be severely damaged" , "I don't agree" said Jack Jordan, a local merchant, "The basis of our business is an attractive community, People who might shop in Baysville don't want to see ugly billboards on their way into town. Billboards are hurting our ability to earn a living."

Jack Jordan a remarks suggest that he is misinterpreting which one of the following words used by Mary Simms?

(A) billboards

(B) basis

(C) our

(D) ability

(E) damaged


为什么是OUR啊

joice

MM, i did this one wrong too.
why 'our'?.
'our business' said by two different group of people, our door advertiser and a local merchant. they are not in the same one group " our'. when the advertiser say ' our business' he mean ' advertise company's business'. but the merchant regard ' our business' as  ' merchant company's business'

祈晴坊主

以下是引用joice在2003-9-20 10:40:00的发言：
MM, i did this one wrong too.
why 'our'?.
'our business' said by two different group of people, our door advertiser and a local merchant. they are not in the same one group " our'. when the advertiser say ' our business' he mean ' advertise company's business'. but the merchant regard ' our business' as  ' merchant company's business'

OH
THAT’S IT！