下述哪种情况下,不出现脊柱圆弧形后凸()
A.类风湿性脊柱炎
B.青年性驼背
C.佝偻病
D.姿势性驼背
E.脊柱结核
参考答案:E
By now we’ve (already) nearly stopped writing to each other .
But ______we kept in touch regularly .
A.all the time
B.at times
C.at one time
D.In no time
注意的起伏又叫()
A.注意的周期
B.注意的动摇
C.注意的循环
D.注意的节律