食品药品监督管理部门应当对食品进行定期或者不定期的抽样检验。进行抽样检验，应当购买抽

阅读理解。

     Today people can use the phone to talk with others almost anywhere on earth. But when you use the

phone,you don 't see the person you aretalking with. That may change in the near future.

     Today some people are using a kind of telephone called the picture phone or vision phone. With it, two people who are talking can see each other.Picture phones can be useful when you have something to show the person you're calling. They may have other uses in the future. One day you may be able to ring up a

library and ask to see a book. Then you'll be able to read the book right over your picture phone. Or you may be able to go shopping through your picture phone. If you see something in the newspaper that you

think you want to buy,you'll go to your phone and call the shop. People at the shop will show you the thing you are interested in right over the phone. You will be able to shop all over the town and never even leave your home.

1. Today people can use the phone to talk with others

A. in all the town

B. in some places in the world

C. only in big cities

D. almost anywhere on earth

2. The underlined word "it" in the text means

A. the picture phone

B. any phone

C. the use

D. the change

3.We can through the picture phone according to(依据)the text

A. Write a book

B. do the shopping

C. play games

D. have c1asses

4. Picture phones are very

A. useful

B. impossible

C. bad

D. badly

5. Which is NOT true according to the passage?

A. Today some people are using a kind of telephone called the picture phone or vision phone.

B. With the picture phone, two people can't see each other.

C. The phone is very useful.

D. Today people can use the phone to talk with others almost anywhere on earth.

（）是对所确定的研究内容或参量，也就是指标进行有效的观察与量度，来判定它的可行性的一个研究方法。

肝海绵状血管瘤的声像图表现是（）。

A.圆形，边界清楚，内回声略低可呈不均匀的实性团块

B.强回声结节多见，周围见较宽的晕环，中心液化呈"牛眼征"

C.圆形或类圆形低回声结节，边界清楚，远侧回声可轻度增强，可见侧方声影

D.外周回声强，内呈网格状回声，边界清楚

E.肝内圆形或椭圆形无回声区，囊壁光滑，后方回声增强

颜面部疖痈的治疗主张（）。

A.早期切开引流

B.局部烧灼

C.局部热敷

D.保守治疗

E.全身支持疗法

汇划收报入账往来户的开户行与报文的收报行不一致的，该收报数据在（）打印收报凭证。

A、开户行

B、收报行

C、收报清算行

D、以上任选其一