题目内容

根据如下红外谱图回答下面问题：
给出该化合物可能的类型。

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水分子的H—O—H对称伸缩振动不产生吸收峰。 ( )

He studied hard at school when he was young， __________contributes to his success in later

A. which
B. that
C. what
D. each of which

男，40岁，因外伤性骨干骨折而入院，入院次日突然出现呼吸困难，继发昏迷，皮下出血，血压80／60mmH9，其诊断最可能是

A. 继发感染
B. 大血管破裂
C. 脂肪栓塞
D. 骨筋膜式综合征
E. 骨折断端严重再移位

People from different countries__________. 查看材料

A. made same words
B. made different kinds of words
C. had a same language
D. used some sounds