单选题 Something must be done. There will not be enough space even to stand ______ the earth.
  • [A] in
  • [B] on
  • [C] in on
  • [D] on in


【正确答案】 C
【答案解析】[解析] 考查介词用法。首先，space不能直接作stand的宾语，只能用in space作状语(但in不能换成on)；其次，on the earth指“在地球(表面)上”，而in一般不与the earth连用。所以本题只能选[C]。