全国职称英语考试综合类C级课堂补全短文第6讲_第4页

D   They’re what will keep the bridge from going anywhere.
F   They will tip up（使倾斜） the scales at 166, 500 tons – more than half the bridge’s total mass.
 
　　It is not just their length –totally 5.3 kilometers – but their weight. __4__.
4. F. 分析：思路特点：注意空格后句中的词语使用特点：空格前出现了their length， their weight，因此判断their可能指“桥”，剩下的选项中：F中提到了有关重量的数据166, 500 tons，因此F是答案。
 
A   Some environmentalists are against the project on biological grounds.
D   They’re what will keep the bridge from going anywhere.
 
　　Those anchors are essential. __5__.

5. D。分析：思路特点：注意空格后句中的词语使用特点：空格前面出现了Those anchors（这些桥桩），而D中的句意（它们是防止桥移动的东西）正是解释了桥桩的作用