现场总线的通信方式是（）
A.数字.单向
B.数字.双向
C.模拟.单向
D.模拟.双向
参考答案：B
根据句意和首字母提示完成单词拼写。
1. When the Spring Festival comes, people often like playing _____(龙) in the country.
2. Don't get too close to the _____ (炉子), or it'll burn your clothes.
3. The cake is too _____ (甜). The boy doesn't like it.
4. Don't _____(对待) animals like that.
5. Mum in the kitchen, _____ (准备) dinner for us.
重型颅脑损伤最常见的并发症是
A．角膜溃疡B．尿路感染C．肺炎D．消化道出血E．褥疮
