To write up his novel, John is looking for an environment free ________ outside distraction.
A. on
B. with
C. from
D. in
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某直线的坐标方位角为121°23′36″，则反坐标方位角为（）
A. 238°36′24″
B. 301°23′36″
C. 58°36′24″
D. - 58°36′24″
Oxford Advanced Learner s Dictionary ’ , 3rd Edition （1980）, is among the best-known British ______ dictionaries.
A. unabridged
B. desk
C. pocket
D. bilingual
Generally, a dictionary covers the following contents EXCEPT ______.
A. spelling
B. pronunciation
C. definition
D. syntactical rules
患者，男性，45岁。患糖尿病5年，近日出现糖尿病酮症酸中毒，其呼吸特点为（）
A. 呼吸频率异常
B. 吸气时间 >呼气时间
C. 呼吸困难
D. 深度呼吸
E. 呼吸浅促
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