2. 外语
  3. Scientists calculated that the asteroid, traveling at 46,000 miles an hour, is on an elliptical path that orbits the Sun once a

Scientists calculated that the asteroid, traveling at 46,000 miles an hour, is on an elliptical path that orbits the Sun once a

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问题 Scientists calculated that the asteroid, traveling at 46,000 miles an hour, is on an elliptical path that orbits the Sun once a year and regularly brings it back toward Earth.
选项 A、hour, is on an elliptical path that orbits the Sun once a year and regularly brings it
B、hour, is orbiting the Sun once a year on an elliptical path that regularly brings it
C、hour, once a year orbits the Sun, regularly bringing it on an elliptical path
D、hour and orbiting the Sun once a year on an elliptical path, regularly bringing it
E、hour, orbits the Sun on an elliptical path once a year and that regularly brings it
答案B
解析 A选项中，第一个that从句，即that orbits the sun有问题，因为把先行词a path代入从句，句意就变为：椭圆形的路径绕太阳运行，而这从逻辑上显然说不通；而应是：小行星以椭圆形的轨道绕着太阳转，排除A。C中：once a year这个时间状语放在主语与谓语之间是不恰当的，同时bringing短语部分无论作伴随状语或伴随结果同样是不可理解的，排除C。D中：在calculated的宾语从句中，主语之后是三个并列的现在分词短语：travelling，orbiting，bringing，而没有谓语，该从句结构不完整。E中：划线部分末的that定语从句之前有and，却找不到与之平行的成分(与句首that引导的宾语从句并列是不可能的)。B正确：is orbiting表明此动作一直在持续，path才是bring的真正动作执行者。
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