国际上评介期刊最有影响力的一个标准是（）A、影响因子 B、读者统计数据 C、引文量

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      The telecom industry  (电信业) has become one of the largest and most useful industries in the world. This industry makes billions of dollars every year. Now the telecom industry is trying to use a new kind of phone-the videophone.

     So what is a videophone? Well,a videophone is just a device  (设备) for communicating. It allows you to communicate with others by video and voice. That's to say, you can both see and hear the person while you are phoning him or her. Many people will ask where to buy a videophone and how expensive it is.

      Many telecom scientists have tried to make a videophone that works well and is also not so expensive,so that everyone can afford it. Through their hard work ,they have made the best videophone-the CAN

Iris 3000. What's more,when you call your friends in other countries,all calls between you are free if you

both have an Iris 3000. Will the videophone be the main telecom device of the future? The ACN Iris 3000 Videophone tells us everything.

1. What is a videophone in Chinese?

A. 移动电话          

B. 固定电话        

C. 可视电话          

D. 网络电话

2. The videophone is different from the traditional phone in that _       .

A. it is very expensive

B. it has a voice and can talk

C. all calls are free if you use a videophone

D. you can both hear and see the person you are talking to

3. Why is the ACN Iris 3000 the best videophone? 

A. It works well.

B. It is not so expensive.

C. Everyone can afford it.

D. All of the above.

4. If you and your friend both have an Iris 3000 and he is in another country,when you call him,you have to pay _        .

A. nothing        

B. 3000 dollars      

C. 3000 yuan      

D. billions of dollars

5. What can we learn from the last sentence of the passage?

A. Everyone will use an Iris 3000 in the future.

B. The ACN Iris 3000 will be the only telecom device.

C. The ACN Iris 3000 can predict everything in the future.

D. The videophone will be the main telecom device of the future.

关于声门癌的描述正确的是（）

A.在喉癌的发病率中居第二位，约占40%

B.与声门上区癌相比，颈部淋巴结转移多见

C.病理类型多为低分化鳞癌

D.肿瘤多发生于声带的后1／3

E.临床主要表现是声嘶

验收人员应完成（）

A.仓库药品质量定期检查记录

B.首营品种的验收记录

C.购进记录

D.质量跟踪记录

E.销售记录

第36～40题使用如下关系： 　　客户(客户号，名称，联系人，邮政编码，电话号码) 　　产品(产品号，名称，规格说明，单价) 　　订购单(订单号，客户号，订购日期) 　　订购单明细(订单号，序号，产品号，数量)

查询订购单的数量和所有订购单平均金额的正确命令是( )。

A．SELECT COUNT(DISTINCT订单号)，AVG(数量*单价)FROM产品JOIN订购单明细ON产品．产品号=订购单明细．产品号

B．SELECT COUNT(订单号)，AVG(数量*单价)FROM产品JOIN订购单明细ON产品．产品号：订购单明细．产品号

C．SELECT COUNT(DISTINCT订单号)，AVG(数量*单价)FROM产品，订购单明细0N产品．产品号=订购单明细．产品号

D．SELECT COUNT(订单号)，AVG(数量*单价)FROM产品，订购单明细0N产品．产品号=订购单明细．产品号

保险反映了一种商品经济关系，这种关系直接表现为( )。

A．全部保险人和全部投保人之间的交换关系
B．全部保险人和个别投保人之间的交换关系
C．个别保险人和个别投保人之间的交换关系
D．个别保险人和全部投保人之间的交换关系