民用房屋出租用于理发美容，其用水属于（）。 A.民用水 B.公共服务用水 C.生产运

选做题：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。

                                                           Linguistic (语言学的) Puzzles

     How did language begin? What was the world's first language? Do all languages come from one, original

language? 1_____.

     In the 4th century BC, the Creek historian Herodotus wrote this account: Psamtik I an Egyptian King,

wanted to find out what the oldest language in the world was. 2_____. He told his servant to find two newborn

babies. When the servant had found them, the king gave them to a shepherd (牧羊人) and said, "Keep these

babies with the goats. Take care of them, but do not talk to them. Listen for any words that they say." The king

wanted to find out what 1anguage the children would speak if they were left alone. He said, "The first words

they speak will come from the original language of the world." 

     3_____. He told the king, who asked his scholars about this word. They told him that the Phiygians, who

lived in an area which is now Turkey, called bread "becos." The king said, "Then Phiygian is the oldest

language."Today we know that the king's conclusion was wrong. We don't know why the children said "becos".

     4_____. Scholars discovered that many European and southern Asian languages belonged to the same"family"

and that they star- ted from the same parent language, Proto-Indo-European. Linguists think that it had split into

several different languages, including Greek and Sanskrit, between 2,000 and 1,000 BC. Other languages, such

as English and Spanish, developed from later splits.

     5_____. Two questions that interest linguists are: How does language change? Why does language. change?

If you like solving mysteries, historical linguistics may be the job for you.

A. Nowadays, we study the origin of language more scientifically

B. He was talking about this problem with his scholars when he had an idea

C. The king was very kind to his servant and his servant remained royal to him

D. Linguists are the scholars who are very interested in categorizing the language families

E. People have been trying to find the answers to these questions for more than 2,000 years

F. One day, while the babies were babbling to each other, the shepherd heard them say "becos"

G. Linguists have classified many language families, and they are still trying to categorize others

TCP 使用三次握手协议来建立连接，设甲乙双方发送报文的初始序号分别为X 和Y，甲方发送 （） 的报文给乙方，乙方接收报文后发送 （） 的报文给甲方，然后甲方发送一个确认报文给乙方便建立了连接。 （注：ACK 的下标为捎带的序号）

甲方发送（）的报文给乙方

A．SYN=1，序号=X

B．SYN=1，序号=X+1，ACKX=1

C．SYN=1，序号=Y

D．SYN=1，序号=Y，ACKY+1=1

2009年某企业年终进行清算时的全部资产价值为800万元，清算费用为24万元，清算时的负债为670万元，企业的资本公积金为3万元，企业的实收资本金100万元，未分配利润和盈余公积为0。该企业清算所得应缴纳企业所得税为（）万元。

A、0.75

B、1.5

C、1.65

D、2.25

纤毛虫遇到刺激后产生的分泌物来自于表膜下的（）

A.刺丝囊

B.刺细胞

C.刺丝泡

D.刺丝