求助：GWD31套 第1套Q3、Q8

mymwmw

For protection from the summer sun, the Mojave lived in open-sided, flat-topped dwellings known as shades, each a roof of poles and arrowweed supported by posts set in a rectangle.

A.    each a roof of poles and arrowweed
B.    each a roof of poles and arrowweed that are being
C.    with each being a roof of poles and arrowweed
D.    with roofs of poles and arrowweed to be
E.    with roofs of poles and arrowweed that are


Sulfur dioxide, a major contributor to acid rain, is an especially serious pollutant because it diminishes the respiratory system’s ability to deal with all other pollutants.

A.    an especially serious pollutant because it diminishes the respiratory system’s ability to deal
B.    an especially serious pollutant because of diminishing the respiratory system’s capability of dealing
C.    an especially serious pollutant because it diminishes the capability of  the respiratory system in dealing
D.    a specially serious pollutant because it diminishes the capability of  the respiratory system to deal
E.    a specially serious pollutant because of diminishing the respiratory system’s ability to deal

Q3正确答案为A, 这是独立主格伴随修饰的用法吗？不是很明白，向大家请教一下，O(∩_∩)O谢谢~
Q8正确答案为A, 从表目的用to do的角度可以解释，不过不是只有人和动物做主语才可以用's表所有吗？

PS. 找了很多GWD的讨论帖都是24套版的，不知31套是否已经有讨论帖了呢？

昵昵大人

呃，不晓得是不是有点钻牛角了，这个词实意是什么应该对答案影响不大
唉，求NN们快快现身啊~~~~

昵昵大人

同问Q3
尤其不解arrowweed这个词的意思，查了字典都查不到，所以不明白这里这个词的词性是名词还是被动式

mymwmw

顶~这两道题希望大家给答疑解惑一下~