3段不同管径的支管组成的串联管路的总阻力等于（）。A．3段支管阻力之和 B．3段支管

根据短文内容简要回答问题。

When you are sad, you need to find ways to deal with(处理)your sadness. When you learn how to deal with your sadness, you’ll find your won happiness.

Accept(接受)your sadness.3It’s not a bad thing to feel sad. Try to face what is making you feel sad. And don’t believe it will just go away on its own.

Speak about your sadness. It’s nice to talk to friends or family about your feelings. You may not need him or her to say a word; just having someone listen to you is sometimes enough.

Put your sadness into written words. Write down how you are feeling every day and why you think you are feeling this way. Write down how you deal with your sadness and which ways work.

Take part in activities. Read a good book, listen to music, exercise or take a walk outside.4These can help you feel comfortable and forget your sadness .

See a doctor. If your sadness starts to interfere with(干扰)your everyday life seriously, you should ask your doctor for help.   

小题1:How many kinds of activities are in paragraph( 段)5?      

小题2:What should we do when we can’t go on with our everyday life because of sadness?

（二） 将短文中划线的句子译成汉语。

小题3:_____________________________________________________

小题4:_____________________________________________________

（三）请给短文拟一个适当的标题。

小题5:_____________________________________________________

一束光线从空气中斜射入某透明物质中，入射光线与法线的夹角是30°，那么反射角的大小是______．当入射光线逐渐靠向法线时，折射光线将______．在光的反射和折射现象中，光路都是______的．

按照分步法计算产品成本，如果企业只生产一种产品，则成本计算对象是该种产品及其所经过的各个生产步骤。( )

治疗乳汁不足的俞穴是（）

A.中冲

B.隐白

C.少泽

D.少冲

E.大敦

清算组在清理债权债务时，发现公司全部财产不足以清偿公司债务，应当（）。

A.按债权比例清偿

B.按债权申报顺序进行清偿

C.由股东承担连带清偿责任

D.终止普通清算程序，向法院申请破产