男患，64岁。自右背部放射至右腋下疼痛8个月，右下肢乏力5个月，加重伴小便费力1个月

患者男，45岁，白血病骨髓移植术后50d，开始出现头痛、乏力、肌肉酸痛，之后出现干咳、发热，听诊两肺未闻及异常，胸片见两下肺散在少许片状和明显间质浸润阴影，血WBC正常，以静脉滴注头孢他啶2g，2次/d抗感染治疗5d症状未见好转，呼吸困难明显加重，胸部CT检查提示两肺浸润范围较前明显增加，累及多个肺叶段，均以间质浸润为主。

检查结果提示pp65抗原阳性，该患者最常用的治疗药物是（）

A.更昔洛韦

B.利福平

C.雷米封

D.复方新诺明（SMZco）

E.泰能

沉降类药物不具备的效用是

A．利水渗湿

B．降逆止呕

C．祛风散寒

D．清热

E．泻下

某研究性学习小组将一定浓度Na₂CO₃溶液滴入CuSO₄溶液中得到蓝色沉淀。甲同学认为两者反应生成只有CuCO₃一种沉淀；乙同学认为这两者相互促进水解，生成Cu(OH)₂一种沉淀；丙同学认为生成CuCO₃和Cu(OH)₂两种沉淀。（查阅资料知：CuCO₃和Cu(OH)₂均不带结晶水）

（1）按照乙同学的理解Na₂CO₃溶液和CuSO₄溶液反应的化学反应方程式为___________________；在探究沉淀物成分前，须将沉淀从溶液中分离并净化。具体操作为：①过滤②洗涤③干燥。

（2）请用下图所示装置，选择合适的实验装置和必要的试剂，证明生成物中只有碳酸铜。

①各装置连接顺序为______（用装置编号表示）

②装置C中装有试剂的名称是_________。

③能证明生成物中只有CuCO₃的实验现象是______________________。

（3）若Cu(OH)₂和CuCO₃两者都有，可通过下列所示装置的连接，进行定量分析来测定其组成。

①实验结束时通入过量的空气的作用是_____________________

②实验过程中测定的数据有：

W1：样品的质量，W2：反应后装置B中残渣的质量，W3：反应生成的水的质量，W4：反应后生成二氧化碳的质量，为了测定其组成，至少需要其中________个数据，请将可能的组合填入下表中（每个空格中填一种组合，有几种组合就填几种，不必填满．）

When I was looking for a Christmas present for my daughter in a toy store, a nicely dressed little girl, with some money in her little hand, was looking at some beautiful dolls. When she saw a doll she liked, she would ask her father if she had enough money. He usually said yes.
At the same time, a boy, with old and small clothes, was looking at some video games. He, too, had money in his hand, but it looked no more than five dollars. Each time he picked up one of the video games and looked at his father, he shook his head.
The little girl had chosen her doll, a very beautiful one. However, she noticed the boy and his father. She saw the boy give up a video game with disappointment and walk to another corner of the store.
The little girl put her doll back to the shelf and ran over to the video game. After she talked to her father, she paid for the video game and whispered(耳语) to the shop assistant.
So the boy got the video game that he wanted for free—he was told it was a prize from the store. He smiled happily, although he felt it was so incredible. The girl saw all this happen. She smiled, too.
When I walked out of the store to my car, I heard the father ask his daughter why she had done that. I would never forget their short talk. " Daddy, didn’t Grandma want me to buy something that would make me happy"
He said, "Of course, she did. "
"Well, I just did!" With that, the little girl started skipping towards their car happily.

Which of the following is TRUE according to the story

A．The little girl was kind and helpful.
B．The video game was a prize from the store.
C．The writer paid for the video game for the boy.
D．The boy bought the video game himself from the store.

天地自然图是指：（）。

A、太极图

B、卦象图

C、四神兽图

D、五行生克图