硫酸溶液的电阻系数随温度降低而（） A.减少 B.增加 C.不变 D.忽高忽低

阅读理解。

     Happiness is for everyone.  In fact, ①happiness is always around you if you put

your heart into it. When you are in trouble at school, your friends will help you; when you study hard at your lessons, your parents are always taking good care of your life and your health, when you get success, your friends will congratulate 'you. When you do something wrong, people around you will help you to correct it. And when you do something to others,  you will feel happy. too. All these are your happiness. If you notice a bit of them; you can find that happiness is always around you.②Happiness is

not the same as money, it's a feeling of your heart. When you are poor, you can also be very happy, because you have something else that can't be bought with money.

When you meet with difficulties, you can say loudly you are very happy. because you have more chances to challenge(挑战)yourself. So you cannot always say you are

poor and you have a bad luck.  ③If you take every change you get, you can be a

happy and lucky person.

1. 将①处改为否定句形式（意义不变）。

2．将②处译成汉语。

3．将③处改为so that引导的目的状语从句。

以下除外哪项皆为临床妇产科常用外治法

A．熏洗法

B．坐浴法

C．敷贴法

D．导肠法

E．割治法

I met a good friend of mine while I ______ on the street. [ ]

A. walks

B. walk

C. was walking

D. am walking

比热容：

（1）物体吸收的热量与 ______，______和 ______有关．

（2）比热容：用单位质量的物质，温度升高（降低） ______℃所吸收（放出）的热量来描述物质吸收（放出）热量的能力，叫做比热容．符号：C；单位：J/（kg•℃）．

（3）比热容反映了物质的吸收热量或放出热量的能力，是物质的一种特性．物质的比热容只跟物质的 ______和 ______有关，而跟物体质量、温度高低等无关．

记住水的比热容：C=______．表示的物理意义是 ______的水温度升高（降低） ______所吸收（放出）的热量是 ______．水的比热容较大，常作冷却剂或散热剂．

下列除哪项外均为大黄的主治病证（）

A.热积便秘

B.湿热痢疾

C.热毒疮疡

D.痰饮喘咳

E.血热吐衄