We can infer from the last paragraph that______.
A. children should start school as early as possible
B. words and language skills are the easiest for children before they start school
C. only words and language skills can be taught to children before they start school
D. it"s better for children to learn words and language skills before they start school
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伤员出现哪些症状提示气道阻塞：__________
A. 呛咳、喘息、吸气时高调噪音、呼吸困难
B. 面色青紫，不能呼吸、说话和咳嗽
C. 伤员用手紧握喉部，呈“V”字状
D. 以上都是
昏迷患者，如果有呼吸，应______________
A. 叩击患者胸部和背部，必要时进行电除颤
B. 将患者摆放至侧卧体位，呼救并等待救护车到来
C. 迅速打开患者气道，并进行口对口吹气
D. 立即使患者仰卧，并开始心肺复苏
According to Jon Fine, ______is the most important to a childs later development.
A. the formation of the temporal lobe
B. the parents" education level
C. an early childhood with rich experiences
D. the ability of processing information
红十字会使用的标志有三种，世界上大多数国家使用_______
A. 红新月
B. 白底红十字
C. 红水晶
D. 以上都是
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