[原创]1月5日上午上海杀鸡（一战：Q47，V40，710）工作汇报——总体尚好，略有瑕

carp

理解啊。处境相同的人还是不少的。。。

俺比较郁闷的是公司派去MIT Sloan的标准尽然是找candidate里GMAT最差的.真是浪费大笔的赞助费！

cuc174

mee too 觉得C对

C  The first is an explanation that the argument challenges; the second provides evidence in support of a competing explanation that the argument defends.
  

D  The first is an explanation that the argument challenges; the second is evidence that has been used against an alternative explanation that the argument defends.

pyc1123

感謝分享喔!!!

zhouhongshan

There are 8 books on a shelf, of which 2 are paperbacks and 6 are hardbacks.  How many possible selections of 4 books from this self include at least one paperback?

A.      40

B.      45

C.      50

D.     55

E.      60

答案C，C84-C64-C65就是了

liubin1987

回楼上.

你搞错了吧...都不知道那C65从哪里来的,暂且说是这样做,C65也是等于6啊,减出来不是49了吗?

coconuts

Q30:

There are 8 books on a shelf, of which 2 are paperbacks and 6 are hardbacks.  How many possible selections of 4 books from this self include at least one paperback?

A.      40

B.      45

C.      50

D.     55

E.      60

答案C，我怎么做都觉得是D，惭愧。

这道我算也是55吗。C(8,4)-C(6,4)=55啊，不知道哪儿算错了。

Answer is (D) --- 55

I found this answer when doing another exercise.

kaochieh

太強了!恭喜!

關於原題...

1.        GWD-5-Q20: Boldface

Scientists typically do their most creative work before the age of forty.  It is commonly thought that this happens because aging by itself brings about a loss of creative capacity.  However, studies show that a disproportionately large number of the scientists who produce highly creative work beyond the age of forty entered their field at an older age than is usual.  Since by the age of forty the large majority of scientists have been working in their field for at least fifteen years, the studies’ finding strongly suggests that the real reason why scientists over forty rarely produce highly creative work is not that they have simply aged but rather that they generally have spent too long in a given field.

 

In the argument given, the two portions in boldface play which of the following roles?

 

1. The first is the position that the argument as a whole opposes; the second is an objection that has been raised against a position defended in the argument.

2. The first is a claim that has been advanced in support of a position that the argument opposes; the second is a finding that has been used in support of that position.

3. The first is an explanation that the argument challenges; the second is a finding that has been used in support of that explanation.

4. The first is an explanation that the argument challenges; the second is a finding on which that challenge is based.

5. The first is an explanation that the argument defends; the second is a finding that has been used to challenge that explanation.

D however  

 

Scientists typically do their most creative work before the age of forty.  It is commonly thought that this happens because aging by itself brings about a loss of creative capacity.  However, a study has found that almost all scientists who produce highly creative work beyond the age of forty entered their fields late and less than a dozen years before their creative breakthroughs.  Since creative breakthroughs by scientists under forty also generally occur within a dozen years of the scientist’s entry into the field, the study’s finding strongly suggests that the real reason why scientists over forty rarely produce highly creative work is not due to age but rather because most have spent too long in their fields.

In the argument given, the two portions in boldface play which of the following roles?

A.           The first is the position that the argument as a whole defends; the second is evidence that is advanced as part of that defense.

B.           The first and second are both claims that have been advanced in support of a position that the argument as a whole opposes.
            

C.          The first is an explanation that the argument challenges; the second provides evidence in
                support
            of a competing explanation that the argument defends.

D.          The first is an explanation that the argument challenges; the second is evidence that has been used against an alternative explanation that the argument defends.

E.           The first is an explanation that the argument defends; the second is evidence that has been used to challenge that explanation.

 

答案是D?? 我覺得是C耶!

kaochieh

原題是: D 沒錯

但這題改變...答案是D?? 我覺得是C耶!

victoria811

strong memory, thx a lot!

brightcoolsz

一个书架上有4本红书，6本绿书，如果从书架上拿5本书，其中至少有一本红书和一本绿书的概率

1- C(6,5)/C(10,5)

There are 8 books on a shelf, of which 2 are paperbacks and 6 are hardbacks.  How many possible selections of 4 books from this self include at least one paperback?

C(8,4)- C(6,4)  =55        C(2,1) X C(6,3) + C(2,2) x C(6,2) =55