问题
单项选择题 A1/A2型题
佝偻病初期的主要表现是（）
A.运动系统改变
B.非运动系统改变
C.非特异性神经精神症状
D.语言发育落后
E.反复感染
答案
参考答案：C
解析：佝偻病初期多为神经兴奋性增高的表现，如易激惹、烦恼、汗多刺激头皮而摇头等。但这些并非佝偻病的特异症状，仅作为临床早期诊断的参考依据。
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佝偻病初期的主要表现是（）
A.运动系统改变
B.非运动系统改变
C.非特异性神经精神症状
D.语言发育落后
E.反复感染
参考答案：C
解析：佝偻病初期多为神经兴奋性增高的表现，如易激惹、烦恼、汗多刺激头皮而摇头等。但这些并非佝偻病的特异症状，仅作为临床早期诊断的参考依据。
Even though it was only October，my students were already whispering about Christmas plans. With each passing day everyone became more__36__ waiting for the final school bell. Upon its__37__ everyone would run for their coats and go home，everyone except David. David was a small boy in ragged clothes. I had often__38__ what kind of home life David had，and what kind of mother could send her son to school dressed so__39__for the cold winter months without a coat，boots，or gloves. But something made David__40__.I can still remember he was always__41__a smile and willing to help. He always__42__ after school to straighten chairs and mop the floor. We never talked much.He__43__ just simply smile and ask what else he could do，then thank me for letting him stay and slowly__44__ home. Weeks passed and the__45__ over the coming Christmas grew into restlessness until the last day of__46__ before the holiday break. I smiled in__47__ as the last of them hurried out of the door. Turning around I saw David__48__ standing by my desk. “I have something for you，”he said and__49__from behind his back a small box.__50__ 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__51__ I saw nothing. I looked at David’s smiling face and back into the box and said，“The box is nice，David，but it’s__52__.” “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___53__ I looked at the proud dirty face that I had rarely given__54__ to. After that Christmas，David and I became good friends and I never forgot the meaning__55__the little empty box set on my desk..
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