诊断气管异物最主要依据是（） A.异物吸入史 B.咳嗽 C.呼吸困难 D.听诊肺呼吸

阅读理解。

    Here is some advice to help you develop confidence(信心) and make friends at school:

    ●Take a deep breath. You shouldn't be so nervous. Remember that in your new school you will find

kids at your age. You're going to meet people like you there.

    ●Do something nice for someone. Save someone a seat. Say" Hi" in the hall. Give congratulations for

a job well done.

    ●Use friendly gestures (姿态). Try smiling and laughing a bit when talking to others. This will make you

feel more relaxed. Be yourself. If your friends don't accept you, they're not real friends. Join after-school

activities you like. Even if you don't know anyone there, you'll all share a common interest.

    ●Look for other people who are new to the school. You're probably not the only one and at least, you'll have one thing in common: you're both in a new environment(环境). So making new friends shouldn't be

so hard.

    ●Don't sit at the back of the class where other people don't notice you! Try to sit in the middle where

you are around everyone and can make conversations with them.

1. What should you do if your classmates win a football game?

                                               ______________         

2. Do you have to change yourself to let your friends accept you?                                               

__________________________________________                                                          

3. You may     __    after school to meet someone who shares a common interest with you.

4. Where should you sit in the class?

                                                ______________        

5. What is the best title of this passage?

                                              ______________          

实验室现有5%的过氧化氢溶液、稀盐酸、高锰酸钾、石灰石、相应实验用品及以下仪器：

（1）请选择可以制取的气体所需要的仪器______（填序号）：制取该气体发生反应的化学方程式是______

（2）请写出实验室制取二氧化碳的化学方程式______将制取二氧化碳的发生装置图画在下列方框内，并与盛有石蕊试液的试管连接：

盛有石蕊试液的试管中观察到的现象是______由此得出的绪论是______．

《中国药典》收载的物理常数没有（）

A.熔点

B.比旋度

C.折光率

D.吸收系数

E.绝对密度

科学素养中的情感是指一个人对科学事物所表现出的感情指向和情绪体验，是形成其科学态度的前提。

NHL经典的化疗方案是ABVD方案。 （）