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问题
单项选择题
肺部大范围炎症破坏,坏死组织液化并经支气管排出后的结果是()
A.渗出
B.钙化
C.增殖
D.纤维化
E.空洞
答案
参考答案:E
选择题
We were about to climb up to the top of the mountain _____ it began to rain heavily.
A. as
B. while
C. when
D. since
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问答题
他们胸怀祖国,放眼世界,大力发扬了敢拼敢搏的精神,终于夺得了冠军。
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