已知关于x的一元二次方程x2-2x+k=0． （1）当方程有两个实数根时，求实数

太阳辐射热，是温室（）的基本来源之一。

A.温度

B.积温

C.热量

D.空气

Tony Bennett, the American singer recently touring Britain, can’t remember how many times he has sung his standard hit “I left My Heart in San Fransisco”. He sang it again to his audience at the London Palladium last night.

“I never get tired of singing it.” He said. “I like it too much . It’s a great city and it’s a good song.”

Bennett is to record a TV program with American singer Lens Home while he is here. And a new LP recorded by him in London for Philips titled “Listen Easy” will be published in June.. “I like it here.” He added quietly over whiskey. “I would like to live here so many months of the year.”

He already keeps a large flat in Grosenor Square, where he is staying with his actress wife Sandie Grant and their three-year-old daughter Joanna. It has a studio where he likes to paint. Tony plans to have his first exhibition later in the year and he has already sold one picture for $4000. At the end of the year Tony is to star in a musical film , which has been specially written for him called “Two Bits”, an informal expression for 50 cents. It’s about an Italian immigrant who goes to America , but he becomes a failure.

“In many ways it’s very close to my life the way the story has been written,” said Bennett. “My father, an Italian ,was ill and died when I was nine. He always wanted me to sing, but he never lived long enough to be a part of my success.

小题1:The underlined phrase “standard hit” most nearly means______

A．Bennett’s favourite song but it’s not very popular.

B．a song that is always popular

C．a song which makes him standard

D．a song which is like a heavy blow to his audience小题2:What does Tony Bennett want to do?

A．Buy a house and live in England.

B．Stay with his wife and daughter in England.

C．Live part of each year in England

D．Leave American and settle in England小题3:What’s Tony’s hobby?

A．Singing

B．Drinking

C．Playing

D．Painting小题4: What can we learn about Tony’s father from this passage?

A．He liked his son’s singing.

B．He was born in Italy and died when Tony Bennett was a small boy

C．He was a part of Bennett’s achievement

D．He was glad that his son became famous.小题5:What kind of man is Tony Bennett？

A．hardworking and humorous

B．family-centered and hardworking

C．outgoing and kind

D．ambitious and trustworthy

2011年3月15日，北京58个政府部门及直属机构，除市公安局涉密外，已经全部在网上公开部门预算。这样做有利于：

①实现公民的知情权 ②简化政府办事程序

③拓展公众监督渠道 ④提高公务员办事效率

A．②④

B．②③

C．①③

D．①④

武汉长江电子科技有限公司(420133××××)利用企业自有资金进口电焊机(法检、自动进口许可证管理)。货物于2008年5月20日运抵上海浦东国际机场( 2233)，办理转关手续后，经海关批准于次日直接转运至武汉，委托武汉中远货运代理有限公司向武汉机场海关(4712)办理进口报关纳税手续。

请根据以上资料，选择以下栏目正确选项：

“运输方式”栏（）。

A．1

B．2

C．5

D．9

血小板和血管壁的相互作用中，生理作用完全相反的调控系统是下列哪一对（）

A.TXA₂，PGI₂

B.TXB₂，PGI₂

C.PGG₂，PGH₂

D.TXB₂，PGE₂

E.TXA₂，5-HT