单项选择题

比强度是表明材料( )性能 A.
抗压 B.
轻质高强 C.
弹性 D.
硬度

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singleTask模式可以很好的解决重复创建栈顶活动的问题
单项选择题
Forrest has run for a long time after Jenny’s leaving and his mother’s passing away. He recalls the most important meaning of the running is his mother saying: _________. A. Life is a box of chocolatesB. Don’t let anyone tell you that they are better than youC. You’ve got to put the past behind you before you can move onD. Death is just a part of life
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