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已知反应:C(s)+H2O(g)⇌CO(g)+H2(g)△H>0,某温度下,向5L密闭容器中加入2mol C(s)与1mol H2O(g),t1s时,CO的物质的量为0.20mol,到第t2s时恰好达到平衡,此时CO的物质的量为0.35mol,下列说法正确的是(   )

A:t1时改变的条件可能是使用催化剂

B:t1时改变的条件可能是增大 H2O 浓度

C:t1~t2这段时间内的化学反应速率 v(H2O)= t2−t10.15

D:t2后继续加入 2 mol C(s)平衡向正反应方向移动

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B

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    Anki has introduced Cozmo, a little robot powered by an advanced artificial intelligence. Cozmo promises to be for more interactive(互动的)than any toy robot.

    Cozmo, which can lie in your hand, has a “brain”---technically its CPU---that can process data amazingly fast. In addition, Cozmo has a playful personality. He's designed to react to emotions and even ask users to play with him.

    Cozmo is not the first interactive toy to reach the market nor is it the first robot toy. What sets Cozmo apart from the other “smart toys” is that it has greater play value than those toys, which can become repetitious all too quickly.

    “Every interaction with Cozmo is different, so you do not put up with repetitive play patterns and responses typically found with other preprogrammed robots,” explained Anki spokesperson Peter Nguyen. Because it has functionality that is similar to that of video games, Cozmo also can receive regular updates, which could extend its playability. Still, Anki has designed this toy to be just that: a toy. It's not an advanced computerized robot. Its software is app-based.

    Cozmo lacks the “traditional” human-like robot form factor(要素)of legs, arms, and a head. But Cozmo does have an OLED screen/face with blue eyes, which in fact were designed to help it connect with its user.

    “I'm glad my kids are already raised,” said Roger L. Kay, analyst at Endpoint Technologies Associates. “Otherwise, they might become more antisocial if their relationship with Cozmo is more satisfying than those with real people,” said Kay. “Cozmo might encourage kids to learn more about technology or even inspire them to try programming and similar studies,” said Charles King, analyst at Pund-IT.

    Yet this technology does promise to be more than a toy. “It's a pretty cool invention and might have further applications, for example in elder care,” suggested Kay.