女，75岁。摔伤致右侧股骨颈骨折，Garden分型为Ⅳ型，合适的治疗方案是（） A.

肾性骨营养不良是CRF，尤其是尿毒症的严重并发症，亦称肾性骨病。其发病机制相关因素有（）

A.高磷血症、低钙血症

B.PTH分泌增多

C.1，25-（OH）₂VD₃形成增多

D.酸中毒

E.PTH分泌减少

自愿性福利

有甲、乙两金属块，甲的密度是乙的2/5，乙的质量是甲的2倍，则甲的体积是乙的（   ）

A．0.2倍

B．0.8倍

C．1.25倍

D．5倍

引起亚急性感染性心内膜炎最常见的致病菌是

A．厌氧菌

B．草绿色链球菌

C．肠球菌

D．金黄色葡萄球菌

E．肺炎链球菌

根据短文内容及首字母的提示，填写所缺单词。

Mr. Martin went into a coffee shop one morning, and sat a 小题1:. Many others came in, but most of them did not stay long.

After fifteen m小题2:, a young man and a young woman came in. There were only two e 小题3:  seats at the counter, one on Mr. Martin’s left, and the other on his r小题4: .So Mr. Martin offered  to change places w小题5: the man, so that the man and the young woman could be t小题6:.

“Oh, that isn’t necessary,” the young man said. But Mr. Martin still wanted to c小题7:. When  they were side by side, the man said to the woman, “Well, this gentleman wanted us to s 小题8:  together, so may I introduce m 小题9: ? My name is Tom. What’s y小题10:?”