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KEY→P1
范畴:人与社会 主题:科学技术 体裁:应用文 难度:★★★★ 建议用时:7分钟 评价:/4
新模态 访谈 Liu Hao，43，Guizhou Communications Investment Group；Zhang Yuchen，17，Ningbo No.3 High School，Zhejiang；Ye Qinfeng，13，Guanshanhu Middle School，Guizhou
Zhang: Why did you make the Huajiang Grand Canyon Bridge a suspension bridge(悬索桥)?
Liu: Suspension bridges are strong. They can cross very long spaces. They cost less than cable-stayed bridges(斜拉桥). Also, they don't need many supports from the ground. This is very important for Guizhou. Guizhou has karst landforms(喀斯特地貌). There are many holes and rivers under the ground in such places.
Ye: Will things like wind and rust(锈) make the bridge fall? How do you stop this from happening?
Liu: First, each main cable(主缆) of the bridge is made of 217 smaller ropes. We placed these ropes carefully so that the weight is shared equally. This makes the cables last longer. Even if a few ropes break, the cables still work. To control wind, we used one device called an eddy current damper(涡流阻尼器). It can stop the bridge from shaking in the wind. Rust is a big problem for steel. To protect the cables, we covered them with magnesium(镁). This keeps out water, salt and sunlight.
Zhang: I heard the bridge was very long. So, you built it part by part first. Then, you put the
parts together over the canyon. But the canyon is over 1,000 meters wide. How did you connect all the parts so perfectly?
Lin: We had to build everything very, very carefully—the measurement(测量) had to be perfect. Our team made a smart system using strong cables. First, we put the cables high across the canyon. Then, we hung special moving cranes(起重机) on these cables on both sides. To guide the cranes very precisely, we used the Beidou Satellite System and more than 30 cameras and sensors. These new technologies play an important role in building.
素材来源:21st century
()1. Where is the Huajiang Grand Canyon Bridge?
A. In Guizhou. B. In Yunnan. C. In Zhejiang. D. In Gansu.
()2. Which of the following describes a karst landform?
A. There are hard stones in this area.
B. There is no water under the ground.
C. There are many holes and rivers under the ground.
D. There are lots of trees and grass on the ground.
()3. How does Liu Hao answer the question about wind and rust?
A. By describing the speed in building the bridge.
B. By explaining the difficulties in building the bridge.
C. By showing the videos about building the bridge.
D. By giving some ways to build the bridge.
()4. Which section of a newspaper is this interview most likely taken from?
A. Entertainment. B. Science & Technology.
C. Culture. D. Sports.

B
本文是两名中学生与花江峡谷大桥建设者的对话。
1. A 细节理解题。根据“This is very important for Guizhou.”可知,花江峡谷大桥在贵州。
2. C 细节理解题。根据“Guizhou has karst landforms. There are many holes and rivers under the ground in such places.”可知,喀斯特地貌的特点是:地下有许多洞穴和河流。
3. D 推理判断题。根据“First, each main cable of the bridge is made of 217 smaller ropes ...”可知,刘豪是通过给出一些建桥的方法来回答问题的。
4. B 文章出处题。本文是关于花江峡谷大桥的工程访谈,内容涉及桥梁结构、抗风防锈技术、北斗卫星系统等工程与科技知识,因此最可能出自报纸的“科技”版块。