2. 外语
  3. Titanium has the (strength) of steel but weighs (half only) as much, hence its (advantage) for use (in aircraft).

Titanium has the (strength) of steel but weighs (half only) as much, hence its (advantage) for use (in aircraft).

admin2005-01-28  7
问题 Titanium has the (strength) of steel but weighs (half only) as much, hence its (advantage) for use (in aircraft).
选项 A、strength
B、half only
C、advantage
D、in aircraft
答案B
解析
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