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【判断题】
生产食品添加剂，应当使用符合相关质量安全要求的材料、包装材料及生产设备。A.
正确
B.
错误
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A.
正确
B.
错误
【简答题】Roger Federer and Serena Williams have been named as 2009' s world champions by the International Tennis Federation（ITF） after topping the year-end rankings． Federer, who wins the honour for the fifth...
【单选题】听力原文：M: Sally, here is a letter for us. It's from T0m. W: Can you read it please? My hands are wet with all this washing. M: Well, OK. 'Dear Sally and John, Thanks for your letter, It was good to hear...
A.
Reading a letter.
B.
Washing clothes.
C.
Making a phone call.
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