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20.In October 2007,the Chang'e-l satellite was successfully ＿＿at Xichang.

• A、launched

• B、presented

• C、regulated

• D、engaged

(59)__

11.Bob doesn't look his age.I think he's somewhere＿＿。

• A、in forty
• B、in forties
• C、in his forty
• D、in his forties