2. 外语
  3. After several ______ attempts to send the missile into space, the spacecraft was finally launched successfully.

After several ______ attempts to send the missile into space, the spacecraft was finally launched successfully.

admin2011-04-26  69
问题 After several ______ attempts to send the missile into space, the spacecraft was finally launched successfully.
选项 A、abortive
B、difficult
C、experimental
D、excellent
答案A
解析
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