研磨钢制工件平面最理想的研具材料是（）。A．软钢 B．铜 C．_爱下问搜题

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问题单项选择题

研磨钢制工件平面最理想的研具材料是（）。

A．软钢

B．铜

C．铝

D．灰铸钢

答案

参考答案：D

判断题

该批货物入境放行应向郑州出入境检验检疫机构报检并实施检疫。（）

完形填空

A poor farmer had a friend who was famous for the wonderful apples he grew. One day, his friend ___36__ him a young apple tree and told him to take it home and __37__ it.
Seeing the gift, the farmer was very__38____, and he thought he would also have a lot of wonderful apples, but when he got home, he had a(n) ___39__. He didn’t know___40___ to plant it. He thought over and over and __41___ every place he could think of. __42____ he decided to plant the tree in his woods. There were many high trees with thick leaves in the woods. With those trees around no one else could___43___ the young apple tree. He even felt proud of himself for finding so___44___ a place for the apple tree. Every day he went to take care of the tree, __45___ it. To his surprise and ___46___, the apple tree didn’t grow as he had __47___. It died without sunlight and good soil.
Later the friend asked the farmer why he had planted the tree in such a __48__ place. “ What’s the difference?” the farmer said angrily, “ If I had planted the tree near the___49____, passers-by would have stolen the fruit. If I had planted the tree in one of my fields, my neighbors would have come at night and ___50___ some of the apples! If I had planted it near my house, my own children would have taken the ___51_. No matter where I plant the tree, I can’t have__52__ to enjoy the apples. So there is no difference where I planted it.”
“ Yes,” said the friend, “but __53____ someone could have enjoyed the fruit. Now you not only have robbed everyone of the fruit, but also have __54___ a good apple tree! You don’t know the true meaning of ‘share’!”
We should learn to __55___ in our life. The more you want to own something all by yourself, the less you get at last.

D．appreciating

C．disappointment

D．satisfaction

D．comfortable

A．as a matter of fact

C．first of all