在VOIP系统中，通过（）对声音信号进行压缩编码。A．ISP B．VoIP 网关 C

阅读理解。

     Peter is thirteen years old. He is in Grade Two this year. He likes to play football and watch football

matches. And he often reads newspapers. He does his best to know when and where there is going to

be a football match. Now Peter is having lunch. He is listening to the radio, too. He is very happy because

there is going to be a nice footballmatch on Tv at four this afternoon. He wants to watch it very much.

But he is going to have English and Chinese lessons. He thinks hard and find a way.

      "Hello, Mrs Black," Peter says to his teacher on the telephone," Peter is ill in bed. He wants to ask

for half a day's leave (请半天假)."

     "Oh, I'm sorry to hear that," says Mrs Black. "But who is that?"

     " It's my father. Mrs Black."

1. Peper is a _____. [ ]

A. middle school student

B. Young pioneer

C. worker

2. Peter will be in _____ next year.[ ]

A. Grade Two

B. Grade Three

C. Grade One

3. Peter often reads newspaper because _____. [ ]

A. he likes to read news

B. he likes to read stories

C. he wants to know when and where a football matchwill be.

4. Peter wants to ask for a leave because _____. [ ]

A. his father is ill

B. he wants to watch the football match

C. he is ill in bed

5. Which of the following is right? [ ]

A. Mr Black is going to take Peter to see a doctor.

B. Peter likes to watch TV at four in the afternoon.

C. Peter is not an honest boy.

男，54岁。结肠癌术后8个月，B超发现肝右前叶直径4cm结节

如确诊为转移性肝癌，最有可能的转移途径是（）。

A.经肝动脉

B.经门静脉

C.经淋巴管

D.经神经鞘

E.腹腔种植

目前持我行白金卡可享受接机服务的机场贵宾室为（）

A.北京首都机场

B.上海浦东机场

C.广州白云机场

D.成都双流国际机场

把数条5cm长的马铃薯条分别浸在蒸馏水和不同浓度的蔗糖溶液中，每隔一段时间测量马铃薯条的长度。如图显示马铃薯条在不同浓度溶液中长度改变的百分率。下列相关叙述错误的是（）

A.马铃薯条通过渗透吸（失）水改变其长度

B.在0.10mol/L蔗糖溶液中马铃薯细胞质壁分离

C.马铃薯细胞细胞液浓度相当于0.30mol/L的蔗糖溶液

D.在0.40mol/L蔗糖溶液中马铃薯细胞失水皱缩

目前，商业银行的个人贷款业务中还没有委托性个人贷款。( )