皮皮学，免费搜题
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【单选题】
中国在()年4月24日成功发射了第一颗人造地球卫星。A.
1968
B.
1970
C.
1972
D.
1976
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皮皮学刷刷变学霸
举一反三
【简答题】材料的 _______ 是表明材料冷变形硬化性能的重要参数。
【单选题】听力原文：M: I'm going to the museum Sunday afternoon. There is a new exhibition of art from France and England. Do you want to go with me? W: I'd like to. But my best friend is getting married in the Paci...
A.
She is going to an exhibition abroad.
B.
She is going to a wedding ceremony.
C.
She is going on a voyage over the Pacific.
D.
She is going to an art museum.
【简答题】气体的粘度随温度的升高而（），水的粘度随温度的升高而降低。