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【单选题】
大量以上咯血时，病人可有哪些临床表现A.
咽痒、呼吸困难、紫绀
B.
咽痒、胸闷、咳嗽
C.
咽痒、胸闷、呛咳、出冷汗
D.
咽痒、胸闷、胸痛、血压明显下降
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反馈参考答案：
举一反三
【单选题】-- I'm sorry to have shouted at you. I didn't mean to be so rude.--You were very angry. Anyway, ______.
A.
you're welcome
B.
that's right
C.
it doesn't matter
D.
I'm sorry about that
【单选题】—I'm sorry to keep you waiting so long. —________. [ ]
A.
Don't say so
B.
I don't think so
C.
I'd love to
D.
It doesn't matter
【单选题】I'm sorry to trouble you. ---( )
A.
-You are welcome.
B.
You can't say so.
C.
With pleasure.
D.
Not at all.
【单选题】十九大报告指出,全面()是国家治理的一场深刻革命,必须坚持厉行法治,推进科学立法、严格执法、公正司法、全民守法。
A.
依法治国
B.
依法行政
C.
以德治国
D.
以德理政
【简答题】纯净的具有晶体结构的半导体称为 ,常用半导体材料有 和 ,它们都是4价元素,原子外层有 个价电子,且在相邻原子之间形成稳定的 结构,因此载流子浓度很低,所以导电能力 。
【单选题】I'm sorry to have you _____ so long. [ ]
A.
waited
B.
to wait
C.
waiting
D.
to be waiting
【单选题】-I'm sorry to have shouted at you. I didn't mean to be so rude to you. -You were very angry. Anyway, ____.
A.
you're right
B.
you're kind
C.
it doesn't matter
D.
I'm sorry
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