The main topic of the news item is

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问题 The main topic of the news item is
  
News Item 1
    The space shuttle Endeavour is taking off on its final endeavor. The launch was delayed due to mechanical problems, but NASA officials said those were all fixed.
    The shuttle and its crew are headed to the international space station. This is a 16-day mission and the next-to-the-last mission for the space shuttle program. Mae Jemison has flown on Endeavour before. On that mission, she became the first African-American woman to travel into space. She said yesterday’s launch brought up mixed emotions.
    "Things are transitioning. When we spoke last year, we were there talking about the fact that the shuttle era was coming to an end, and now the United States was putting more of its research money into how to do interplanetary travel, how to come up with the kinds of engines that are needed to go, to taking us to an asteroid. (7) So, that transition is great, but it’s sort of hard to see the shuttle program ending. "

选项 A、she thought it was great to transit to interplanetary travel.
B、she felt a little bit pity about the shuttle program.
C、she thought it was unbelievable to see so fast a change.
D、she felt proud to travel to the other planet.

答案D

解析 根据句(7)可知,宇航研究方向的转变是伟大的,但是看到航天飞机项目的终止不是一件让人轻松愉快的事。上文还提到Mae去年参加航天飞行的时候谈论的是航天事业要终止了,而今年美国就将大量资金投入到星际间的航行,因此也感到难以置信,综上可知,[D]为正确答案。
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