问题
单项选择题
工件定位结束后可以（）
A.可以开始加工，无需对定位精度进行分析与计算。
B.一般可以开始加工，有时需对定位精度进行分析与计算。
C.一般需对定位精度进行分析与计算，有时可以马上进行加工。
D.必需对定位精度进行分析与计算。
答案
参考答案：D
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工件定位结束后可以（）
A.可以开始加工，无需对定位精度进行分析与计算。
B.一般可以开始加工，有时需对定位精度进行分析与计算。
C.一般需对定位精度进行分析与计算，有时可以马上进行加工。
D.必需对定位精度进行分析与计算。
参考答案：D
A young man was about to finish school. For a long time he had 26 to get a beautiful sports car. He knew his father could well 27 it, so he told him that a sports car was all he wanted. Then on the morning of his graduation（毕业）,he was called to his father’s room. His father told him how 28 he was to have such a fine son, and told him how 29 he loved him. He handed his son a beautiful gift box. 30 , the young man opened the box and found a lovely Bible（圣经）with his name on it. Angrily, he raised his 31 to his father and said, “With all your money you give me a Bible? ” He then 32 out of the house, leaving the Bible. Many years passed and the young man was very 33 in business, and had a beautiful home and a wonderful family. 34 that his father was very old, he thought perhaps he should go to see him. He had not seen him 35 that graduation day. Before he could go, he received a 36 telling him that his father had died. He had to go home immediately and take 37 of the things that his father left him. When he began to search through his father’s important papers, he saw the still new Bible, 38 as he had left it years ago. He opened the Bible and began to 39 the pages. As he was reading, a car key with a tag（标牌） dropped from the back of the Bible. On the tag was the 40 of his graduation, and the words “PAID IN FULL”. Sadness and regret（悔恨）filled his heart. 
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