把一条线段向一个方向无限延伸就形成了( )；向两个方向无限延伸就形成了( )．

已知（3+2a）²+|b﹣2|=0．则ab=（    ）．

手厥阴经别“出”于（）。

A.面

B.口

C.耳后

D.项

E.耳前

阅读理解。

     The very wealthy English Baron Fitzgerald had only one child, a son, who understandably was the apple

of his eye. His wife died when the child was in his early teens. So Fitzgerald devoted himself to fathering the

kid. Unfortunately the son died in his late teens.

     Meanwhile, Fitzgerald's wealth greatly increased. He spent a lot on art works of the masters. Later

Fitzgerald himself became seriously ill. Before his death, he had carefully prepared his will as to how his

wealth would be settled-to sell his entire collection at an auction (拍卖).

     Because of the large quantity and high quality of his collection, a huge crowd of possible buyers gathered

for the auction. Many of them were museum directors and private collectors eager to bid (出价). Before the

auction, the art works were shown, among which was a painting of Fitzgerald's son by an unknown artist.

Because of its poor quality, it received little attention.

     When it was time for the auction, the auctioneer gaveled (敲槌) the crowd to attention. First the lawyer

read from Fitzgerald's will that the first art work to be auctioned was the painting of his son.

     The poor-quality painting didn't receive any bidders...except one-the old servant who had served the son

and loved him, and who for emotional reasons offered the only bid.

     As soon as the servant bought the painting for less than one English pound, the auctioneer stopped the

bidding and asked the lawyer to read again from the will. The crowd became quiet, and the lawyer read from

the will: "Whoever buys the painting of my son gets all my collection." Then the auction was over.

1. The English Baron Fitzgerald was ______.

A. a museum director

B. a master of art

C. an art collector

D. an art dealer

2. Why did the old servant bid for the painting of Fitzgerald's son?

A. He was devoted to the family.

B. He saw that no one bid for it.

C. He knew the content of the will.

D. He found it cheap for him to buy.

3. Fitzgerald's will showed _______.

A. his desire to fool the bidders

B. his invaluable love for his son

C. his sadness at the death of his son

D. his regret of having no children to take over his wealth

光纤通信系统光接收的主要指标是哪两个？

2008年9月19日，证券交易印花税进行调整后的标准是( )。

A．税率统一下调为2‰
B．税率由1‰调整为3‰
C．只对出让方按1税率征收，对受让方不再征收
D．只对受让方按1‰税率征收，对出让方不再征收