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【单选题】
下列性质中，等腰三角形具有而直角三角形不一定具有的是（ ）A.
有一个角的平分线垂直于这个角的对边
B.
外角和等于360°
C.
有两个锐角的和等于90°
D.
两条边的平方和等于第三条边的平方
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反馈参考答案：
举一反三
【简答题】中年人脂肪的摄取应占总热量的多少最为适宜。() A10%～15% B20%～25% C30%～35% D40%～45%
【单选题】—Mr. White didn’t come last night ,did he? —No ,we for him. A whole night was wasted.
A.
had waited
B.
have been waiting
C.
were waiting
D.
had been waiting
【简答题】Struggling his way in the dark for a whole night, he finally found himself ______( lose) in the forest.
【简答题】按照机场航线业务范围划分可分为国际机场、国内航线机场、______________。
【单选题】.— Mr White didn't come last night, did he? — No. We _____for him . A whole night was wasted.
A.
had waited
B.
have been waiting
C.
were waiting
D.
had been waiting
【简答题】The news that he had passed the exam made his mother stay a_______ for a whole night.
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