问题
判断题
现场总线的网络协议是按照国际标准化组织制订的开放系统互连参考模型建立的（）
答案
参考答案：对
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现场总线的网络协议是按照国际标准化组织制订的开放系统互连参考模型建立的（）
参考答案：对
| 用方框中所给单词的适当形式填空。每词限用一次。 | |
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| 1. The 3-year-old child can ____________from one to one hundred . 2. It’s __________to cross the road when the light is green. 3. He finished __________a newspaper when I came into his room. 4. She had a little __________for her breakfast. 5. My father looked __________because I played computer games when he was out. |