上次发到走出GMAT困境。。完全没人理我。。问XD姐妹大侠们几道题!!!拜托，请帮帮我。

lovearron

1.GWD-8-Q34: GWD-13-28（这道不懂为什么要用现在完成时）
Fossils of the arm of a sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of the Greater Antilles islands.

A.    sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of
B.    sloth, that they found in Puerto Rico in 1991, has been dated at 34 million years old, thus making it the earliest mammal known on
C.    sloth that was found in Puerto Rico in 1991, was dated at 34 million years old, making this the earliest known mammal of
D.    sloth, found in Puerto Rico in 1991, have been dated at 34 million years old, making the sloth the earliest known mammal on（正选）
E.    sloth which, found in Puerto Rico in 1991, was dated at 34 million years old, made the sloth the earliest known mammal of

2.GWD-8-Q32:？？？？
At the annual stockholders meeting, investors heard a presentation on the numerous challenges facing the company, including among them the threat from a rival’s multibillion-dollar patent-infringement suit and the declining sales for the company’s powerful microprocessor chip.

A.    including among them the threat from a rival’s multibillion-dollar patentinfringement suit and the declining sales for
B.    which includes the threat of a rival’s multibillion-dollar patent-infringement suit and declining sales of
C.    included among these the threat from a rival’s multibillion-dollar patentinfringement suit as well as a decline in sales for
D.（正选）among them the threat of a rival’s multibillion-dollar patent-infringement suit and the decline in sales of
E.    among these the threat from a rival’s multibillion-dollar patent-infringement suit as well as the decline in sales for

3.GWD-8-Q17:
Fossils of a whale that beached on an African shore more than a million years ago and was subsequently butchered by hominids have been recovered by paleontologists.

A.    that beached on an African shore more than a million years ago and was subsequently butchered by hominids have
B.    that beached on an African shore more than a million years ago and then was subsequently butchered by hominids has
C.    that beached on an African shore more than a million years ago, which was subsequently butchered by hominids, has
D.    having been beached on an African shore more than a million years ago and subsequently butchered by hominids, have
E.    having beached on an African shore more than a million years ago and then subsequently were butchered by hominids have

然后一下几道是做PREP模考（730）时怎么也做不懂的。
1. For every positive even integer n, the function H(n) is defined to be the product of all the even integers from 2 to n, inclusive. If P is the smallest prime factor of H(100)+1, then P is greater than 40.（正解）
希望哪位牛牛可以帮我写下详细解答及思路。

5. A certain library assesses fines for overdue books as follows. On the first day that a book is overdue, the total fine is $0.1. For each additional day that the book is overdue, the total fine is either increased by $0.3 or doubled whichever results in the lesser amount. What is the total fine for a book on the fourth day it is overdue?
$0.7(正解)
这道不太懂问题到底在问什么？

6.
Stock    Number of Shares
V    68
W    112
X    56
Y    94
Z    45
If MR.S was to sell 20 shares of X &buy 24 shares of Y, what would be the increase in the range of the numbers of the 5 stocks owned by MR.S?
15(正解)
这个希望连翻译带解释详细点。。我不知它所云啊。。。

冷咖啡

sc部分 发到语法区，那里有讨论

lovearron

谢谢提醒~~~