2. 外语
  3. The development of new jumbo rocket that is expected to carry the United States into its next phase of space exploration will be

The development of new jumbo rocket that is expected to carry the United States into its next phase of space exploration will be

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问题 The development of new jumbo rocket that is expected to carry the United States into its next phase of space exploration will be able to deliver a heavier load of instruments into orbit than the space shuttle and at a lower cost.
选项 A、The development of new jumbo rocket that is expected to carry the United States into its next phase of space exploration and be able to deliver a heavier load of instruments into orbit than the space shuttle and at a lower cost.
B、The development of new jumbo rocket that is expected to carry the United States into its next phase of space exploration and be able to deliver a heavier load of instruments into orbit at a lower cost than the space shuttle.
C、The new development of a jumbo rocket, which is expected to carry the United States into its next phase of space exploration, will be able to deliver a heavier load of instruments into orbit at a lower cost than the space shuttle.
D、A new developed jumbo rocket, which is expected to carry the United States into its next phase of space exploration, will be able to deliver a heavier load of instruments into orbit than the space shuttle can, and at a lower cost.
E、A new developed jumbo rocket, which is expected to carry the United States into its next phase of space exploration, will be able to deliver a heavier load of instruments into orbit than the space shuttle and to cost less.
答案D
解析 根据比较对象的可比性原则，可立刻排除A、B、C。因为than之前核心词均为thedevelopment；than之后均为the space shuttle，两者不具可比性。再根据主语之间的比较要尽可能补出助动词原则，选D。D、E之间还有一个重大差异在句末，即D中的at a lower cost与E中的to cost less。E中的to cost less表明与to deliver并列，共用一个be able to，补充即为be able todeliver and be able to cost less。很明显后一搭配在逻辑上有问题；而D中用at a lower cost作为状语修饰to deliver，在and之后省了to deliver，表明了运送更重的工具的同时还能减少开支。(前面They can provide their services more efficiently and at a lower cost．的表达与本句类似)。
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