如果在已知发送独立的符号中，符号“E”出现的概率为0.125，则符号“E”所包含的信

阅读理解。

     Lindsay hasn't felt like herself these days. Her friends have noticed it, too. Kia was surprised when Lindsay

refused her invitation to go shopping last Saturday. There was really no reason (理由) not to go, but Lindsay

just didn't feel like it. Instead, she spent most of Saturday sleeping.

     But staying in more than usual isn't the only change in Lindsay. She's always been a really good student,

but over the past few months she's not done so well, and she has trouble putting her heart in her study. She's

even failed some exams, and she hasn't yet handed in her homework.

     When she gets home from practice, she's not hungry for dinner. Though she usually eats a little something

with her family at last, she just doesn't have much of an appetite (胃口) --- and nothing seems to taste as

good as it used to. After dinner, Lindsay goes to her room, does a bit of homework, and goes to bed. She's

not even in the mood (心情) to talk on the phone with her friends.

     When her mother asks her what's wrong, Lindsay feels like crying but doesn't know why. Everything

seems wrong, yet nothing too bad has happened. Lindsay just feels sad all the time and can't get away from it.

Lindsay may not realize it yet, but she is depressed (郁闷的).

1. Kia is most probably _________.

A. one of Lindsay's friends

B. a good doctor

C. a new teacher

D. the writer of the story

2. Lindsay refused to go shopping with Kia because _________.

A. she had already done it

B. she didn't want to do it

C. she had to take an exam

D. she hadn't enough money

3. Lindsay's main change is in _________.

A. life habit (习惯) and study

B. doing practice and going shopping

C. interest and hobby

D. working and learning

4. The reason for Lindsay's not doing so well in study might be that _________.

A. she stayed in more than usual

B. nothing happened to her

C. she didn't talk on the phone

D. she couldn't put her heart in her study

5. What is Lindsay's main trouble?

A. She doesn't feel like eating.

B. She's lost all her friends.

C. She is depressed. 

D. She is always crying.

—Did you find the missing couple in the mountain yesterday?

—No, but we ________ to get in touch with them ever since.

A．have tried

B．have been trying

C．had tried

D．had been trying

CT扫描盆腔占位病变进行定性时，扫描技术不包括（）

A.必须做增强扫描

B.增强扫描常规用静脉内团注法再加滴注

C.增强扫描常规用静脉内团注法

D.对比剂总量60～80ml

E.延迟扫描时间30～35秒

《中国现代化报告2005》课题组指出：“事实上，以人均GDP、农业劳动人口占总人口的比重、农业增加值占GDP的比例等三个指标来比较，2002年中国的经济现代化水平只是美国1892年的水平。”对这一结论的正确理解是

A．1892年美国就拥有了中国2002年的生产工具与技术

B．2002年中国的生产总值才相当于美国1892年的水平

C．2002年中国的农业劳动人口数相当于美国1892年的农业劳动人口数

D．2002年中国的经济现代化的综合水平相当于美国1892年的水平

早期食管癌有效的诊断方法是（）

A.色素内镜检查

B.颈淋巴结活检

C.食管镜检查

D.钡剂检查

E.支气管镜检查