题目内容

水分子的H—O—H对称伸缩振动不产生吸收峰。 ( )

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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
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People from different countries__________. 查看材料

A. made same words
B. made different kinds of words
C. had a same language
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成人阑尾切除术后1d出现烦躁、剧烈腹痛，心率1 12／min，血压90／60mmH9，腹胀，全腹压痛，肠鸣音弱，为除外腹腔内出血，首要的检查是

A. B超
B. CT
C. MRI
D. 腹腔穿刺
E. 立位腹部X线平片