等差数列{an}的前n项和记为Sn，已知a2=-6，a6=2． （1）求数列{a

金融危机下的“危险”和“机遇”并存。对企业来说，渡过危机的最好途径就是化“危”为“机”，迎来春暖花开。下列名言中符合矛盾的同一性原理的有 [ ]

①多难兴邦　②我们唯一恐惧的是恐惧本身　③问题与解决问题的方法是同时产生的　④事不避难，知难不难

A．②③

B．①④

C．①③

D．②④

第三部分：阅读理解（共两节，满分40分）

第一节（共15小题，每题2分，共30分）

His parents were told to take him home to die after his rare leukaemia(白血病)returned a THIRD time.”They said there was nothing more they could do and gave him a few weeks to live,” says his mum Claire,26. “But that was six months ago and just look at him now! No one can explain why the cancer has suddenly disappeared. The surgeon who phoned me with the news asid he couldn’t believe it. I just burst into tears”.

Jordan, now three, began his amazing battle with leukaemia at just ten weeks old.Claire and her husband Gery,30, were told their son only had a 10% chance of survival. Jordan put up with six months of chemotherapy(化疗) despite being the youngest patient with cancer that doctors at Yorkhill Children’s Hospital in Glasgow had ever treated. And after he had a bone marrow transplant(骨髓移植) in April,2006 it seemed that the cancer was gone.”He started nursery and we really thought we had put this behind us,” says Claire. But in February the following year Jordan fell ill again and was saved by more chemotherapy and a transplant of matching stem cells(干细胞) from a baby in Barcelona. His family sighed with relief again. But in November, 2008 blood tests showed it was back. “The doctors told us to enjoy what few weeks he had left,” says Claire.

But just before Christmas after further bolld tests, came the phone call Claire and Gerry had never dared dream of. Jordan had another test in February which was also clear. Ken Campbell, of the Leukaemia Research Fund, told us: “There is no medical explanation for his recovery.”

56.Which is the right order of the following events?

a.Jordan started nursery.

b.Jordan had the important blood test showing he was all right.

c.Jordan got a terrible disease leukaemia.

d.Jordan had a transplant of matching stem cells from a baby.

A. a-c-b-d-e     B. c-a-d-e-b       C.c-e-d-b-a        D.c-e-a-d-b

57.From the passage we can know_________________.

A. Jordan’s mother didn’t believe what the doctor said about his son’s recovery.

B. Jorda was not the youngest patient with leukaemia in Yorkhill Children’s Hospital

C. it was the doctors who saved little Jordan’s life

D. nobody knows the reason for the disappearance of the cancer.

58.The underlined part in Paragraph 2 probably means”_________”.

A.our son had been left behind us

B.life was too hard for us

C.the difficulties were gone

D.only doctors knew the story behind our son

59.Which would be the best title for the passage?

A.Cancer, not frighting any more

B.A brave boy

C.An unbelievable wonder

D.An interesting story

关于导体中的电流跟导体两端的电压和导体的电阻之间的关系，说法正确的是（  ）

A．导体中的电流跟导体两端的电压成正比

B．导体中的电流跟导体的电阻成反比

C．在电压一定时，导体中的电流跟导体的电阻成反比

D．导体的电阻与导体中的电流成反比，跟导体两端的电压成正比

广告和印刷等对图像质量要求较高的行业一般使用下列哪种扫描仪（）？

A.平板式

B.手持式

C.滚动式

D.其他

有一种攻击针对网络低层协议而不针对某项特定的应用服务，这种攻击称为 【11】 。