Question 6 is based on the following news. At the end of the news item, you will be given 10 seconds to answer the question. Now listen to the news.
A. they have suspended this kind of rocket.
B. they are investigating the accident.
C. they had never killed civilians mistakenly.
D. they are still proceeding with the operation.
The leader of the imagist movement in American literature is
A. [A] Wallace Stevens.
B. [B] Ezra Pound.
C. [C] Robert Frost.
D. [D] Thomas Stearns Eliot.
患者，男性，66岁，肝癌中晚期。患者极度消瘦，不思饮食，护士为其插胃管补充营养。判断胃管是否在胃内的最好方法是
A. 将胃管末端放入盛水碗中观察有无气泡溢出
B. 用注射器向胃内注入10ml空气听气过水吉
C. 用注射器向胃内注入10ml生理盐水听气过水声
D. 用注射器抽取胃内容物
E. 让病人晃动身体感觉胃内是否有异物存在
心脏自身的血液供应主要来自于
A. 胸主动脉
B. 锁骨上动脉
C. 锁骨下动脉
D. 冠状动脉
E. 肺动脉
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