2. 外语
  3. Some expensive drugs can be economical______.

Some expensive drugs can be economical______.

admin2015-10-09  37
问题 Some expensive drugs can be economical______.
选项 A、at long last
B、in the long way
C、in the long run
D、at long length
答案C
解析 这是一道词组题，考点是形相似、意思相近的词组的辨析。
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