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当前学科:公卫执业助理医师综合练习
题目:
单选
当样本相关系数r=0.288,r时,则统计结论是()
A . 存在直线相关和回归关系
B . 存在因果关系
C . 不存在直线相关和回归关系
D . 不存在函数关系
E . 存在函数关系
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Enids wedding dress arrived at five oclock in the evening: just seventeen hours before her marriage! "I must try it【C1】______, mother!" She cried, as she ran up stairs. Three minutes later Enids cries【C2】______her mother to her. The dress was much【C3】______big for her. It was baggy(鼓鼓囊囊的)in the front, and the neckline looked all wrong. Enid was in【C4】______. "Take it back to the dressmakers," Mrs. Bale said. "She must【C5】______it tonight. Hurry now. Take it off and go. " The dressmakers shop was closed. "CLOSED FOR ONE WEEKS HOLI DAY", said a【C6】______on the door. Fresh tears【C7】______to Enids eyes. She ran home again to her mother. "This is【C8】______," Mrs. Bale said. "But what are we going to do? Shall I ask Mrs. Peters to help? She was a dressmaker【C9】______. Im sure she could help. " Mrs. Peters was brought【C10】______and began work. She could see what was【C11】______. She had to take in a lot of material at the front, and that was a【C12】______job. Then she altered the neckline—in fact she made it【C13】______. At ten oclock the work was finished, and Enid put on the dress and found it【C14】______her beautifully. The three women were having a cup of tea【C15】______the doorbell rang. Mrs. Bale answered it and looked【C16】______the worried eyes of a plump(丰满的)young woman. The woman was carrying a large box. "Does Miss Enid Bale live here?" she asked【C17】______. "Yes, shes my daughter. " "Oh, Im glad Ive【C18】______you! There has been a【C19】______. Your daughter has my wedding dress, and Ive got hers. And Im getting married tomorrow!" She【C20】______out the box to Mrs. Bale.【C1】A.onB.withC.outD.in