下列毒性最大的表面活性剂是（） A.溴苄烷铵（新洁尔灭） B.肥皂类 C.卵

根据对话情景和内容，从对话后的选项中选出能入空白处的最佳选项。选项中有两项为多余选项。

E

We’ve all got a lot going on in our lives. Some things are fun, some aren’t. I think I’ m a fairly positive person. 1   In fact, being positive means different things to different people. 2  

Focus on what you have not what you don’t. It’s impossible for one to have all the nice things in the world. Focus on what you already have. This can create feelings of happiness.

3  If you can express thanks for everything you have, you leave little room for bad thoughts. It’s a great practice. When you focus on what really matters, so many worries go away.

Forget the past and don’t cling to(紧紧抓住) the future:  4  If you cannot forget mistakes and missed opportunities from the past, you probably find you blame yourself all the time. Clinging to the future is a bad one, too. It truly may never happen. So pay more attention to the present .

 5  It always makes me wonder what people are saying about me if they speak so ill of someone else when they aren’t around. If you don’t do this, you never have to worry about what you’ve said getting back to someone.  

A． Be grateful.

B．Here are a few key ways to being positive that have really helped me.

C．Speak about others as if they were in front of you.

D．The past will never come again.E．Being positive doesn’t mean smiling a fake smile all the time.

F．The past has happened and the future may never come.

G．Have fun and hug yourself.

Duchenne型肌营养不良患者多在25~30岁死于（）

A.脑疝

B.心力衰竭

C.呼吸衰竭

D.肾衰竭

E.消耗性疾病

患者女，在妇科检查中发现宫颈重度糜烂，宫颈刮片细胞学检查为巴氏Ⅲ级，此种情况提示（）

A.炎症

B.正常

C.高度可疑癌症

D.可疑癌症

E.可确诊为癌症

钢包炉加热时为什么考虑电极升降要“同步起弧”？

对人脸图案感兴趣出现时间

A．出生后6个月
B．出生后第三周
C．出生后第一天
D．出生后2～4周
E．出生后2周以后