2. 外语
  3. In 1961, NASA has encouraged studies of space-planes that could be built using existing technology. British companies have prop

In 1961, NASA has encouraged studies of space-planes that could be built using existing technology. British companies have prop

admin2009-04-23  28
问题 In 1961, NASA has encouraged studies of space-planes that could be built using existing technology.
British companies have proposed designs that are more suitable than the X-33 and X-34, but the government does not support it.
选项 A、Y
B、N
C、NG
答案A
解析 第8段的最后1句，“…but they aye handicapped by a government…”受到了政府部门的阻碍。
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大学英语六级

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