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【单选题】
对心绞痛发作处理不正确的是A.
立即停止活动卧床休息
B.
给予氧气吸入，维持血氧饱和度90%以上
C.
给予硝酸甘油舌下含服，可多次给药，直至症状缓解
D.
24小时心电监护
E.
避免情绪紧张激动
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反馈参考答案：
举一反三
【单选题】【C16】
A.
must have been provided
B.
might have provided
C.
must have provided
D.
might have been provided
【单选题】听力原文：W. Jack must have been joking when be said that he was going to quit his job. M: Don't be too sure. He told me that he was trying to sell his house. What conclusion does the man want us to make?
A.
He believes that Jack will not be able to sell his house.
B.
He believes that Jack was joking.
C.
He agrees with the woman.
D.
He believes that Jack will quit his job.
【简答题】杂交改良方法有 、 和 三种。
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