坝址选择主要是根据地形、地质、施工、征地移民、建筑材料及综合效益等条件，初选几个坝址，通过不同的工程布置方案比较，确定各坝址的代表方案。综合比较各坝址代表方案，进行技术经济综合比较，选定工程坝址。选定坝址时，依据地形条件可确定（）。
A.河谷狭窄，地质条件良好，适宜修建拱坝
B.河谷宽阔，地质条件较好，可以选用重力坝或支墩坝
C.河谷宽阔，河床覆盖层深厚或地质条件较差，且土石、砂砾等当地材料储量丰富，适宜修建土石坝
D.在高山峡谷地区布置水利枢纽，应尽量减少高边坡开挖
参考答案：A, B, C, D
解析：地形条件很大程度上制约坝型选择和枢纽建筑物特别是泄洪消能建筑物以及施工导流工程的布置，最终反映到坝址的经济性上。河谷狭窄，地质条件良好，适宜修建拱坝；河符宽阔，地质条件较好，可以选用重力坝或支墩坝；河谷宽阔、河床覆盖层深厚或地质条件较差，且土石、砂砾等当地材料储量丰富，适于修建土石坝。
| 阅读理解。 | ||||||
| Shakespeare's Birthplace and Exhibition of Shakespeare's World Welcome to the world-famous house where William Shakespeare was born in l564 and where he grew up. The property (房产) remained in the ownership of Shakespeare's family until 1806. The House has welcomed visitors traveling from all over the world, for over 250 years.
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| 1. How much is the admission for a family of two grown-ups and two children? | ||||||
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| A. ￡9.80. B. ￡12.00. C. ￡14.20. D. ￡16.40. | ||||||
| 2. Where is the nearest parking place to Shakespeare's Birthplace? | ||||||
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| A. Behind the exhibition hall. B. Opposite the Visitors' Centre. C. At Windsor Street. D. Near the Coffee House. | ||||||
| 3. A wheelchair user may need help to enter _____. | ||||||
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| A. the House B. the garden C. the Visitors' Centre D. the exhibition hall |