电子工程又分为()、电子机房工程、电子设备工程项目。A.电子自动化工程 B.净化工程

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。（满分10分）

People who are confident really seem to be naturally outstanding and just seem to do everything with more style than others.    小题1:  It is a habit that everyone can develop in life. Try these simple tips to drill and build up your confidence:

1. Admit your shortcomings calmly.

Do not try to flee from them or cover them. Face them bravely.  小题2:   Fight against them every day until the day when you could break away and conquer them.

2. Dress for self-confidence.

小题3:  And therefore pay attention to your dress, display your unique physical advantages and exhibit your best image. In addition, on formal occasions such as a business conference or a wedding ceremony, elegant dressing contributes to building your confidence.

3.  小题4:  

You should break your routine that deals with the work passively(被动地). Concentrate your efforts immediately on overcoming it, because it will make your restless mind at ease and build your self-confidence.

4. Be positive.

Feel pity neither on yourself nor on others. If you are used to hating and accusing yourself, others would tend to do that and believe it. Instead, you should speak positively about yourself, your progress, and your bright future.    小题5: 

A．Your appearance could put you into embarrassment or increase your confidence.

B．Then talk about them to a reliable mate, a friend or a family member.

C．Actually, true self-confidence is neither born nor acquired overnight.

D．Build your confident vocabulary.E. By doing so, you would encourage your growth in a positive direction.

F. Don’t put off what you eventually have to do.

G. Don’t judge a person by appearance.

维生素A是鱼油中的有效成分，其结构属于下列哪类成分

A．奠类

B．烯醚萜

C．倍半萜

D．二萜

E．三萜

ScrollView中，可以直接包含多少个组件（）。

A.三个

B.两个

C.一个

D.无数个

下图是某生物体的精原细胞增殖以及形成精细胞过程示意图，其体细胞中染色体及DNA数目均为2n。图中标明了染色体与染色体上的基因。①③细胞都处于染色体的着丝点向两极移动的时期，下列有关的判断错误的是（）

A.①中无同源染色体，染色体数目为4n，DNA数目为4n

B.②中有同源染色体，染色体数目为2n，DNA数目为4n

C.③中无同源染色体，染色体数目为2n，DNA数目为2n

D.此分裂过程产生的另外三个精细胞的基因组成是aB、Ab、aB

在我国，挂车制动的控制一般采用（）。

A.冲气制动

B.放气制动

C.排气制动