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The Touchstone When the great library of Alexandria burned, the story goes, one book was saved. But it was not a valuable book; and so a poor man, who could read little, bought it for very little money. The book wasn't very interesting, but between its pages there was something very interesting indeed. It was a thin strip of vellum on which was written the secret of the 'Touchstone'! The touchstone was a small pebble that could turn any common metal into pure gold. The writing explained that it was lying among thousands and thousands of other pebbles that looked exactly like it. But the secret was this: The real stone would feel warm, while ordinary pebbles are cold. So the man sold his few belongings, bought some simple supplies, camped on the seashore, and began testing pebbles. He knew that if he picked up ordinary pebbles and threw them down again because they were cold, he might pick up the same pebble hundreds of times. So, when he felt one that was cold, he threw it into the sea. He spent a whole day doing this but none of them was the touchstone. Yet he went on and on this way. Pick up a pebble. Cold - throw it into the sea. Pick up another. Throw it into the sea. Pick up another. Throw it into the sea. The days continued over a long period if time. One day, however, about mid-afternoon, he picked up a pebble and it was warm. He threw it into the sea before he realized what he had done. He had formed such a strong habit of throwing each pebble into the sea that when the one he wanted came along he still threw it away. So it is with opportunity. Unless we are cautious, it’s easy to fail to recognize an opportunity when it is in hand and it’s just as easy to throw it away. 1.The man bought the book because______. A.he wanted to read it             B.it was very interesting C.there was a secret in the book     D.he wanted to find the touchstone 2.We can learn from the passage that the touchstone is______. A.pure       B.cold         C.magic         D.big 3.Why did the man throw the pebbles into the sea? A.Because he didn’t want to get the same pebbles. B.Because he didn’t want others to pick them up. C.Because he didn’t like their ordinary looks. D.Because he didn’t like the cold feelings. 4.What does the author want to tell us in the passage? A.We about orate opportunities in our life. B.We should seek for opportunities in the world. C.We may seize opportunities when we are watchful D.We may discover opportunities when forming habits.
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举一反三
【判断题】与传统数据相比,大数据从传统的因果分析向相关性分析转换,这不仅从根本上改变了传统数据的开采模式,更改变了数据思维方式。
A.
正确
B.
错误
【简答题】中国海军三大舰队2013年10月18日到11月初在西太平洋海域举行代号为“机动-5号”的远海实兵对抗演习。 图 9 示意 “ 机动 -5 号 ” 演习区,读图,完成下列各题。 ( 1 )图中 1 线表示 _______ (经线或纬线),它指示 _______ 方向。 ( 2 )蓝军 B 军舰在 雷达上发现红军 A 军舰,此时 A 军舰的经度是 ______ ,纬度是 ______ 。
【单选题】20毫米PVC管可容纳( )
A.
7
B.
5
C.
2
D.
3
【单选题】《铁路旅客人身伤害及携带品损失处理暂行办法》列车发现旅客在区间坠车时应当()。
A.
减速停车
B.
立即停车
C.
继续行驶
D.
终止运行
【单选题】用于两轴相交的齿轮传动是()。
A.
螺旋齿轮传动
B.
人字齿轮传动
C.
圆锥齿轮传动
D.
斜齿轮传动
【单选题】20毫米PVC管可容纳( )条双绞线。
A.
2
B.
3
C.
5
D.
7
【单选题】列车发现旅客在区间坠车时应当()按照本办法第四条处理,并通知就近车站或将受伤旅客移交就近车站。
A.
立即停车
B.
不予理会
C.
报告司机
D.
报告乘警
【单选题】20 毫米 PVC 管可容纳 ( ) 条双绞线。
A.
5
B.
4
C.
3
D.
2
【判断题】申请人可以对党的纲领和章程提出质疑。
A.
正确
B.
错误
【单选题】20毫米PVC管可容纳()条双绞线。
A.
7
B.
5
C.
2
D.
3
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