请教GWD-27-Q18

zanyingsan

我觉得因为slowly moving closer to the surface of the object 代表的是一个动作的 后面是动作的目的 表目的时用 帖哦 do 所以排除CDE 
B里面的hoping to 错 hope后面接that从句 that可省略。

mndd

如是指代的measurements的话，就应该是themselves

zhima427

这种应该是嵌入式关系分句
that scientists....是measurement的定语
measurement是hope的宾语
如此一来，就可以解释为什么会同时出现hope和will enable两个动词，也没有插入语要加逗号相隔的烦恼了·~
详情参见prep语法笔记吧~

zkybq

这里应该是一个嵌入式关系分句（遇到多次个人认为是一个相对的优选选项）
引自08prep语法笔记：
“关于嵌入式关系分句—by tankobe：
OG12-118. The world wildlife fund has declared that global warming, a phenomenon most scientsts agree to be caused by human begings in burning fossil fuels, will create havoc among migratory birds by altering the enviroment in ways harmful to their habitats.
a) A phenomenon most scientists agree to be caused by human beings in burning fossil fuels,
b) a phenomenon most scientists agree that is caused by fossil fuels burned by human beings,
c) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels
d) which most scientists agree on as phenomenon caused by human beings who burn fossil fuels,
e) which most scientsts agree to be a phenomenon caused by fossil fuels burned by human beings
   查了很多贴（国内和国外），对C选项的解释都是半斤八两，看得我一头雾水！（为什么一个定语从句里有两个动词agree和is）
   一个普遍的误读是：说most scientists agree 是插入语，虽然是没加逗号！（此解释绝对是误人子弟！！！）
   今天我翻遍章振邦的《新编英语语法》（CD上有下载），在1193—1395页赫然发现一个语法词条——嵌入式关系分句，详解如下：
   “有一种关系分句（即定语从句），它既是先行项的后置修饰语（即定语），同时又是另外一个分句结构的宾语（即宾语从句）”此分句结构就被嵌入在定语从句中，即嵌入式关系分句。
   该书举例：In his breast-pocket he had a patch of scarlet, which i suppose was the paper cap serving as a handkerchief.
注意两点：
1）从句which was the paper cap serving as a handkerchief 首先是 patch of scarlet的定语从句。        
2）从句which（patch of scarlet） was the paper cap serving as a handkerchief 也是i suppose 的宾语从句，即I suppose （that）the patch of scarlet was the paper cap serving as a handkerchief 。
综上所述，当一个定语从句同时是另一个主谓结构的宾语从句是，就可以写为嵌入式关系分句。
”

claudesun

同意12 13楼说法~