问题
单项选择题
根据目前的认识，脊髓空洞症与下列哪种病变密切相关（）
A.脑积水
B.椎管内肿瘤
C.颈椎病
D.颅脑创伤
E.颅颈交界畸形
答案
参考答案：E
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根据目前的认识，脊髓空洞症与下列哪种病变密切相关（）
A.脑积水
B.椎管内肿瘤
C.颈椎病
D.颅脑创伤
E.颅颈交界畸形
参考答案：E
A small boy and his father were walking home __1__ when it suddenly(突然) began __2__ hard. They did not have their umbrella with them and __3__ was no place __4__ from the rain. So they were soon wet. __5__ when they were walking home through the rain, the boy kept thinking. Then __6__ he turned to his father and said to him, “Why does it rain, father? It isn’t nice, is it?” “No, It isn’t very nice, but it is useful, my dear son,” answered his father. “It rains __7__ the vegetables grow __8__ and to make the grass __9__ for cows and sheep.” The son thought about it __10__ seconds, and then he asked, “then why does it rain on the road too, father?”
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