甲、乙两人进行射击比赛，在相同条件下各射击10次．他们的平均成绩均为7环，10次

阅读短文，判断正误，对的写T，错的写F。

     Bob comes from England. He is eleven. He likes to play basketball. His father Mr. Brown works

in a big shop in Chengdu. Bob has a brother. His name is Mike. He is only four. It is Saturday, Bob's

family is all at home. Mr. Brown is sitting on a chair and reading a book. Bob is cleaning his new bicycle.

His brother is playing with his dog.

( )1. Bob likes to play soccer.

( )2. Bob has an old bike.

( )3. Mike is playing with his cat.

( )4. The family has four people.

( )5. The family is all at home.

已知一次函数y=kx+b（k、b为常数且k≠0）的图象经过点A（0，﹣2）和点B（1，0），则k=　   　，b=　   　．

简述输血中过敏反应的原因、临床表现及防治措施。

最常见的鼻咽癌的组织学类型是（）。

A.未分化癌

B.泡状核细胞癌

C.腺泡状细胞癌

D.低分化鳞状细胞癌

E.高分化鳞状细胞癌

24岁女性，有不洁性生活史。1周束发现大阴唇出现圆形直径1～2cm边界清晰的红色皮疹，表面略高于皮肤，可见溃烂，无疼痛．无瘙痒。

最可能的诊断是

A．尖锐湿疣

B．结核

C．硬下疳

D．淋病

E．外阴癌