题目

阅读理解 Sandra Bullock turned 51 last month. But because she looks exactly the same as she did in Miss Congeniality, a movie filmed back in the 20th century, everyone calls her “ageless.” Bullock is just one of a number of stars in their 40s and 50s who've had birthdays recently but have not gotten older, unlike the rest of us in their age group. Take Halle Berry. One website put a photo of her 20 years ago next to one of the newly 49-year-old Berry and dared us to choose which was which. “This Is What 49 Looks Like,” it said. Seriously, if that's what 49 looks like, I must be 71.过去,山区公路多为“之”字形盘山公路。现在,兴建高速公路则是逢山开道,遇沟建桥,尽量取最短距离(如图)。据此完成小题。【小题1】早期山区公路选线多为“之”字形,主要是考虑(        )A.气候因素 B.居民点分布 C.地形因素  D.工业分布 【小题2】在山区兴建高速公路不呈“之”字形,其主要原因有(   )①经济实力的增强 ②科技水平的提高 ③汽车性能的改善 ④为节省投资A.①② B.②③ C.③④ D.②④ 
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