问题
单项选择题
抽油机井采油就是把（）的油通过深井泵往复作用采出到地面。
A、套管
B、油管
C、深井泵
D、油层
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
抽油机井采油就是把（）的油通过深井泵往复作用采出到地面。
A、套管
B、油管
C、深井泵
D、油层
参考答案：D
Even though it was only October, my students were already whispering about Christmas Plans. With each day passing, everyone became more __1___ waiting for the final school bell. Upon its ___2___ everyone would run for their coats and go home, everyone except David. David was a small boy in ragged clothes. I had often ___3___ what kind of home life David had, and what kind of mother could send her son to school dressed so __4__ for the cold winter months, without a coat, boots, or gloves. But something made David __5___. I can still remember he was always _6__ a smile and willing to help. He always __7__ after school to straighten chairs and mop the floor. We never talked much. He ___8___ just simply smile and ask what else he could do, then thank me for letting him stay and slowly __9__ home. Weeks passed and the __10__ over the coming Christmas grew into restlessness until the last day of __11__ before the holiday break. I smiled in __12__ as the last of them hurried out the door. Turning around I saw David __13__ standing by my desk. “ I have something for you,” he said and __14__ from behind his back a small box __15__ it to me, he said anxiously, “open it.” I took the box from him, thanked him and slowly unwrapped it. I lifted the lid and to my __16__ saw nothing. I looked at David’s smiling face and back into the box and said, “The box is nice, David, but it’s __17__.” “Oh no it isn’t,” said David. “It’s full of love. My mum told me before she died that love was something you couldn’t see or touch unless you know it’s there.” Tears filled my eyes__18__ I looked at the proud dirty face that I had rarely given __19__ to. After that Christmas, David and I became good friends and I never forgot the meaning __20__ the little empty box set on my desk.
|