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【单选题】
大兴安岭-太行山-巫山-雪峰山一线是我国（ ）A.
季风区和非季风区的分界线
B.
人口稀疏区与人口稠密区的分界线
C.
地势第二、三级阶梯的分界线
D.
内流区域和外流区域的分界线
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反馈参考答案：
举一反三
【单选题】甲亢病人行手术治疗的指征，下列哪项应除外（）。
A.
高功能腺瘤
B.
结节性甲状腺肿并甲亢
C.
胸骨后甲状腺肿并甲亢
D.
青少年甲亢
E.
131 I治疗后复发的甲亢
【单选题】— My teacher says she's cancelling the class play. I just can't understand. — ______.You were looking forward to it. [ ]
A.
It doesn't matter
B.
It's very unwise of her
C.
Don't worry about it
D.
You must be disappointed
【简答题】— My teacher says she's canceling the class play. I just can't understand. — _____. You were looking forward to it. [ ] A. It doesn't matter. C. It's very unwise of her. C. Don't worry about it. ...
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