一个性状受多个基因共同影响，称之（）。 A.一因多效 B.一因一效 C.多因一效 D

Directions :

Once you were ill and were hospitalized for a few weeks in the Chaoyang Medical Center, City of Tai Yuan, Shanxi Province. During your stay the entire staff were kind to you. Write a letter to

1) tell about your stay in the hospital and

2) extend your gratitude to the hospital staff.

You should write about 100 words on ANSWER SHEET 2. Do not sign your own name at the end of the letter. Use "Li Ming" instead. You don’t have to write the address.

麻风的唯一传染源是（）。

A.老鼠

B.牛

C.麻风患者

D.猪

E.鸡

一位同学身高1.7m，站在1m的平面镜前，他在镜中的身高是（　　）

A．0.7m

B．1m

C．1.7m

D．无法判断

公安财务保障工作为各项公安工作提供( )。

A．警用装备

B．经费

C．警用设施

D．服务

按照标准程序测量血压的平均值为145／90mmHg，属于（）

A.正常高值

B.高血压1级（轻度）

C.高血压2级（中度）

D.高血压3级（重度）

E.单纯收缩期高血压