输精管结扎术后致孕的原因有（） A.自然再通 B.残余精子受孕 C.结扎过程中将其他

阅读理解。

     My uncle has a great sports collection. He loves sports very much. And he loves all balls. He likes

playing basketball and volleyball. He also likes watching ballgames. How many balls does he have? He has

5 basketballs, 12 baseballs, 10 tennis rackets, 4 volleyballs and 14 baseball bats and many other balls.

1. _______  has a great sports collection.

A. My father

B. My grandfather

C. My uncle

D. My cousin

2. He loves _______  very much.

A. sports

B. music

C. balls

D. A and C

3. He likes playing _______  and _______.

A. volleyball; baseball

B. volleyball; basketball

C. basketball; baseball

D. soccer ball; tennis

4. He has _______  tennis rackets.

A. 5

B. 12

C. 10

D. 4

5. He has _______ soccer balls.

A. 5

B. 12

C. 10

D. we don't know

对数据库中数据可以进行查询、插入、删除、更新，是因为数据库管理系统提供了

A．数据定义功能

B．数据操纵功能

C．数据维护功能

D．数据控制功能

女性，40岁。误吞生青鱼胆2枚，3h后出现腹痛、呕吐、腹泻等症状，次日因少尿就诊。体检：血压150/90mmHg，Cr600μmol/L。

住院1天余，症状无改善，日尿量300ml，Cr750μmol/L。应选下列哪项治疗最佳（）

A.应用大剂量利尿剂

B.给予肾病用氨基酸

C.限制水摄入

D.透析疗法

E.使用苯丙酸诺龙

不属于遗传性红细胞内在缺陷的疾病的是

A．β-珠蛋白生成障碍性贫血
B．PNH
C．G-6-PD
D．HbH病
E．遗传性椭圆形红细胞增多症

下表是（）调查表。

A.称重法

B.回顾法

C.定量食物频率法

D.定性食物频率法