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Which part of a suspension bridge carries most of its weight? 吊橋的哪個部分承載了它的大部分重量？
本文指出橋的承重最終轉移到錨碇系統，而此錨碇系統被嵌進岩石或混凝土裡，選 D。
(A) The deck and the master cables. 橋面和主纜。
(B) The bedrocks and the support pillars. 基岩和支柱。
(C) The towers and the suspension cables. 塔架和高架纜繩。
(D) The anchorages and the cables in the ground. 錨錠和土裡的纜繩。

中英對照
A suspension bridge is a type of bridge that use overhead cables to support its roadway. 吊橋是一種使用高架纜繩支撐其道路的橋樑。
The design of a suspension bridge is simple and straightforward, and uses several architectural techniques to distribute the weight of the bridge safely and evenly. 吊橋的設計簡單明瞭，並使用多種建築技巧來安全、平均地分配橋樑的重量。
The construction of a suspension bridge starts with its towers, which are usually located on dry land and anchored to bedrock. 吊橋的建造從它的塔架開始，這些塔架通常位於乾燥的土地上並錨定在基岩上。
Once the towers are built, master cables are strung across them and anchored into the bank at both ends of the bridge. 塔架建成後，主纜將穿過塔架並錨定在橋兩端的堤岸上。
Next, suspension cables are strung from the master cables, and then the deck used as roadway is attached to them. 接下來，將高架纜繩從主纜上串起，然後將作為道路用途的橋面附加連接到這些高架纜繩。
Most of the weight of the bridge is transferred by the cables to the anchorage systems. 橋樑的大部分重量由纜繩轉移到錨碇系統。
These are embedded in either solid rock or huge concrete blocks. 它們被嵌進堅固的岩石或巨大的混凝土塊中。
Inside the anchorages, the cables are spread over a large area to evenly distribute the load and to prevent the cables from breaking free. 在錨錠內部，纜繩大面積分佈，以均勻分佈負載並防止纜繩斷裂。
One of the oldest engineering forms, suspension bridges were constructed by primitive peoples using thick vines for cables. 作為最古老的工程形式之一，吊橋是由原始人使用粗藤作為纜繩建造的。
A much stronger type was introduced in India around 400 A.D. that used cables of braided bamboo. 公元 400 年左右印度引入了一種更堅固的類型，它使用編織的竹子纜繩。
In the early nineteenth century, suspension bridges used iron chains for cables. 十九世紀初，吊橋使用鐵鍊作為纜繩。
Today, the cables are made of thousands of individual steel wires bound tightly together. 今天，纜繩是由數千根單獨的鋼絲緊緊捆綁在一起製成的。
A single steel wire, only 0.1 inch thick, can support over half a ton of weight without breaking. 一根只有 0.1 英寸厚的鋼絲可以支撐半噸以上的重量而不會斷裂。
Light and strong, a suspension bridge could span distances from 2,000 to 7,000 feet, which is much longer than any other kind of bridge could.  一座輕巧而堅固的吊橋可以跨越 2,000 到 7,000 英尺的距離，這比任何其他類型的橋樑都長得多。
Its simple design allows high clearance under the deck, useful when the bridge is built over a major shipping waterway or a very deep gulf.  其簡單的設計允許在橋面下有很高的空隙，當橋樑建在主要的航運水道或非常深的深坑上時很有用。
A suspension bridge is also less subjected to collapse than some other bridge types such as those built on support pillars.  吊橋也比其他一些橋樑類型（例如那些建造在支柱上的橋樑）更不容易倒塌。

英文7000單字表：
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