GRE In the xy-plane,line k is a line that does not pass thro

太阳火色2022-10-04 11:39:541条回答

GRE
In the xy-plane,line k is a line that does not pass through the origin.Which of the following statements individually provide(s) sufficient additional information to determine whether the slope of line k is negative?Indicate all such statements.
A.The x-intercept of line k is twice the y-intercept of line k.
B.The product of the x-intercept and the y-intercept of line k is positive.
C.Line k passes through the points (a,b) and (r,s),where (a – r)(b – s) < 0.

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wzr915 共回答了14个问题 | 采纳率92.9%: 如果直线k不经过原点,那么斜线方程为y=kx+b(b不等于0),k就是斜率.题目中问斜率为负的充分条件首先当然是斜率存在,即斜线k不与X轴垂直.
A 选项如果他说了X和Y上的截距那就说明截距是存在的,那么就不存在斜线平行于X轴或Y轴的情况.
假设斜线交X轴于点(a,0),交Y轴于点(0,b),a=2b,b/a=1/2>0.那么截距k=(0-b)/(a-0)=-1/20,也就是k=-b/a; 1年前

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C

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一段gre的分析,no other contemporary poet's work has such a well-e 一段gre的分析, no other contemporary poet's work has such a well-earned reputation for near impenetrability,and there are few whose moral vision is so imperiously unsparing.Of late,however,the almost belligerent demands of his severe and densely forbidding poetry have taken an improbable turn.This new collection is the poet's fourth book in six years--an ample output even for poets of sunny disposition,let alone for one of such penitential austerity over the previous 50 years.Yet for all his newfound volubility his poetry is as thorny as ever rx23451年前1: klingjf 共回答了19个问题 | 采纳率100%

我大概直译了一下,
（1）第一句：no other contemporary poet's work has such a well-earned reputation for near impenetrability,and there are few whose moral vision is so imperiously unsparing.
在同时代的作品里,没有一部诗歌作品可以因深不可测而拥有如此好的声望,并且也很少有作品的道德观是如此的专横.（也就是说,这首诗歌很难懂却很出名.作者的的道德理想十分的专横无情,这一点在其他作品里是少有的）.
（2）第二句：Of late,however,the almost belligerent demands of his severe and densely forbidding poetry have taken an improbable turn.
然而对于后者而言（of late）,人们对作者那种严厉无情的惧怕的态度发生了转变.（看逻辑关系就知道,第一句贬义,第二句转折,下文肯定是赞扬或者是反常.）
（3）第三句：This new collection is the poet's fourth book in six years--an ample output even for poets of sunny disposition,let alone for one of such penitential austerity over the previous 50 years.Yet for all his newfound volubility his poetry is as thorny as ever
这是他六年来的第四本书.这实在是太高产了,即便对于那些天性乐观的诗人来说（也太高产了）,更不要说是这个在过去50年里惜字如金的人.即便如此,他的诗歌还是难懂.
全文大概就是说：这个人的诗歌难懂,并且写的东西很少.但是他突然变得高产了,即便如此,他的诗歌还是让人不懂.

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B

本题考查介词。本题考查短语play the role of扮演……角色；“在电影中”用介词in。句意：——周杰伦在3D电影《青蜂侠》中扮演加藤。——我已经看过了。

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grateful

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Where do you live?I live at Green Treen Street.（不是 on,而是 at,凡是指街道,都用at)

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size as

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never 从来没有去过那里

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它这里是省略句,完整的是those who don't drink more two cups of coffee a day,而不能省略成你说的那样子,况且那样不符合语法规则.

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1.door
2.month

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GRE In the xy-plane,line k is a line that does not pass thro

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