求大神答疑解惑一道题目！！！跪求！

糖果binbin

7. Using technology as new as space-age fabrics and as ordinary as common
dry-cleaning chemicals, scientists and historians, in their attempt at cleaning and
preserving the American flag that flew over Fort McHenry in Baltimore in 1814,
are hoping that it will then last another 200 years.
(A)and as ordinary as common dry-cleaning chemicals, scientists and historians,
in their attempt at cleaning and preserving the American flag that flew over Fort
McHenry in Baltimore in 1814, are hoping
(B)and as ordinary as common dry-cleaning chemicals, scientists and historians
are attempting to clean and preserve the American flag that flew over Fort
McHenry in Baltimore in 1814, hoping
(C)and as ordinary as common dry-cleaning chemicals, an attempt by scientists
and historians to clean and preserve the American flag that flew over Fort
McHenry in Baltimore in 1814 is being made in the hope
(D)but also as ordinary as common dry-cleaning chemicals, scientists and
historians who are attempting to clean and preserve the American flag that flew
over Fort McHenry in Baltimore in 1814, hoping
(E)but also as ordinary as common dry-cleaning chemicals, an attempt by
scientists and historians at cleaning and preserving the American flag that flew
over Fort McHenry in Baltimore in 1814 in hopes

本人错选了A，正解是B。有看某些解释说选项A中的it指代不明，那选项B中的it指代的什么呢？这句话句意到底是什么意思啊？求解答

newyork201999

语意为王
了解句子含义，直接秒选
楼主仔细看看A和B的区别
把svo 单独拉出来就明白了

蟹黄味蚕豆

楼上说的挺对的，it的指代，只需要排除绝对错误，指代歧义这样的相对错误用来排除选项的优先级较低，因为没有明确标准，也很难应用。

ak920

B中it指代 American flag，句意是科学家和历史学家希望借助这种方法，清洁和保存从1814年就开始飘扬的国旗，寄希望于它再飘扬另一个200年。
通过某项工作->希望结果。

Brandon12

眼花了看成frog...

糖果binbin

newyork201999 发表于 2018-11-14 06:06
语意为王
了解句子含义，直接秒选
楼主仔细看看A和B的区别

同意！               

糖果binbin

蟹黄味蚕豆 发表于 2018-11-14 09:31
楼上说的挺对的，it的指代，只需要排除绝对错误，指代歧义这样的相对错误用来排除选项的优先级较低，因为没 ...

同意！               

糖果binbin

ak920 发表于 2018-11-14 10:20
B中it指代 American flag，句意是科学家和历史学家希望借助这种方法，清洁和保存从1814年就开始飘扬的国旗 ...

同意！