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【单选题】
下列材料中，不属于气硬性胶凝材料的是（）A.
石膏
B.
水玻璃
C.
石灰
D.
水泥
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反馈参考答案：
举一反三
【单选题】The protest began wit a small group, but then others took up the _______.
A.
wake
B.
promise
C.
refrain
D.
coin
【简答题】What kind of tea are you ?
【单选题】The author ________.
A.
began to think of becoming a writer at Harvard
B.
had always been successful in his writing career
C.
went to Harvard to learn to write plays
D.
worked as a newspaper man before becoming a writer
【单选题】The reason why the writer's car began to move from side to side is ______.
A.
there was something wrong with his car
B.
he ate apples as he drove
C.
an earthquake began to happen
D.
he drove too fast
【单选题】The author ______.
A.
began to think of becoming a writer at Harvard
B.
had always been successful in his writing career
C.
want to Harvard to learn to write plays
D.
worked as a newspaper man before becoming a writer
【单选题】关于卵巢浆液性囊腺癌的声像图描述，不正确的是
A.
多为单侧，囊壁薄而光滑
B.
囊内有弥漫性乳头状回声
C.
常伴出血坏死，囊液较混浊
D.
实性区常可见到丰富的血流信号
E.
血流频谱呈低阻型，RI≤0.4
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