关于转座子的功能不正确的是（） A.促进DNA重排 B.引起基因重复 C.引起基因扩

阅读下面广告，根据广告内容回答下列问题。

        If you're studying English , the Language Study Fair (游乐会) that's being held this month will certainly

attract you . The fair is going on between the 28th and 30th of June at the National Education Center . It is held

to answer all your questions about self-study no matter how your English is .

        The Language Study Fair gives a very good chance for you to see and to get all kinds of information to

help you improve the way you study . Over 350 producers of educational materials (材料) will be at the fair .

Come along to this , and you won't waste your money in the future on materials that are out-of-date , or books

that you just don't need . We've got lots of different things for you to see and hear . There will be stands (展台)

showing different kinds of self-study textbooks and talks by educational speakers on the best ways to study by

yourself . We're sure you'll also enjoy watching people using the latest computer programs to make studying

English alone so much easier . This is for you to make good decisions about what you buy .You can come to

the fair from nine thirty to five . Tickets cost ￡5 each , or ￡3 if you're a full-time student . All tickets can be

booked by ringing the ticket hotline . The number is 9847711 . 

         So, we hope to see you there !

1. Who will go to the Language Study Fair? 

2. What will attract those who go to the Language Study Fair?

3. What will you buy if you want to make studying English much easier?

4. What is the opening time of the fair?

5. How can you get a ticket for the fair?

烟花爆竹生产过程中，手工生产硝酸盐引火线时，应在单独工房内进行，每间工房定员( )人，每人每次限量领药( )kg。

A．1；1
B．2；1
C．1；2.5
D．2；2.5

某企业分批进口一成套设备，其中部分设备和零配件对应的H.S编码不在《出入境检验检疫机构实施检验检疫的进出境商品目录》内，以下表述正确的是______。

A．目录外的设备无须报检
B．目录外的零配件无须报检
C．目录外的设备和零配件均无须报检
D．目录外的设备和零配件均须报检

对特殊的医疗护理措施及临床实验性治疗，如果精神病人不能真正理解和决定，必须征得其______的知情同意。

“无证上岗”属（）行为。

A、轻微“三违”

B、一般“三违”

C、严重“三违”