在骨肿瘤的实验室检查中，下列哪项是错误的（） A.广泛溶骨性的转移或骨破坏，血清钙常

设f₀(x)＝sinx，f₁(x)＝f₀′(x)，f₂(x)＝f₁′(x)，…，f_n＋1(x)＝f_n′(x)，n∈N，则f₂₀₀₆(x)＝（ 　）

A．sinx　

B．－sinx

C．cosx　

D．－cosx

患者，男，18岁，口腔溃疡反复发作，溃疡发作间隔时间没有规律，每次溃疡虽然数目不多，但持续时间长，经常3周都不愈合，疼痛痛苦不堪。此次右颊黏膜溃疡已有10余天，仍疼痛明显。口腔检查发现右颊黏膜相对第三磨牙附近有一个深在溃疡，可探至肌层，直径1cm左右，界限清楚，边缘红肿隆起。拟诊断为（）。

A.口腔结核

B.颊部鳞癌

C.腺周口疮

D.轻型口疮

E.创伤性溃疡

39×22的积大约是[ ]

A.600

B.800

C.1000

阅读理解。

     请阅读下列应用文和相关信息，并按照要求匹配信息。 以下是广告信息：

     Some programmes that will be on in Beijing

     A. Joyful jugglers: The China Acrobatic Troupe is staging a night variety show at the Tiandi Theatre,

where the seemingly impossible becomes reality, and performers spin plates and juggle umbrellas.

     Time: 7:15 pm, daily

     Place: 10 Dongzhimen Nandajie, Chaoyang District

     Tel:6502-3984

     B. Leaping into a fream: The ballet troupe of the Italian La Scala Opera House will stage its classic ballet

" A Midsummer Night's Dream" by Shakespear.

     Time: 7:30 pm, November 10-11

     Place: Poly Theatre, dongsi Shitiao, Chaoyang District

     Tel: 6506-5345

    C. Raising her voice: Chian's top soprano You Hongfei will hold a solo concert. The young soprano has

made her name in recent years with her penetratingly high voice and her outstanding performance of Violetta

in the opera La Traviata, Leonora in The Troubadour and many roles in Cinese operas.

     Time: 7:30 pm, October 29 Place: Beijing Concert Hall, 1 Beixinhuajie

     Tel: 6605-7006, 6605-5812 

     D. Key German player: German pianist Valentin Schiedermair will give his solo concert. Born into a family

of musicians, Schiedermair, whose great grandfather is the founder of The Beethoven Archive, played chamber music with his father since childhood.

     Time: 7:30 pm, November 3

     Place: Forbidden City Concert Hall in Zhongshan Park, northwest of Tian' anmen Square

     Te: 6559-8285

      E. Songs of yesterday: Taiwan singer Tsai Chin will greet her fans with her good old songs. For Tsai, it

doesn't matter how old she is or how long she has been offstage; she could never be forgotten.

     Time: 7:30, December 16

     Place: Great Hall of the people, west of Tian' anmen Square

     Tel: 6417-7845

      F: Chinese female artist Li Yan is presenting nearly 50 ink-and-color painting at the National Art Museum

of China. On display are landscape and flower creations including a series of Mount Qomolangma.

     Time: 9 am-5 pm, until October 31

     Place: 1 Wusi Dajie

     Tel: 8403-3500

以下是与广告相关的信息项,请匹配它们与它们所对应的广告.

1. Dan is interested in ballet and enjoys the kind of programme which gives him a chance to see a professional

    performance to improve his own dancing skill.

2. Gina is a middle-aged music teacher. Although she prefers popular songs nowadays, she likes old popular

    songs which call up her memory of the past days.

3. Ron majors in painting at a famous university and now is on business in Beijing. She hopes to have a chance

    to see display on landscape and flower creations.

4. Rob leads a busy life in Beijing, only having free time in the evening. Because he is not familiar with Chinese,

    he doesn't particularly enjoy programme but acrobatic shows.

5. Bella enjoys rock and roll music very much, but recently she wants to make a change by attending serious

    piano concerts which play works of music masters.

在绘画上首创"明暗渐隐法"的画家是（）。

A.达·芬奇

B.拉斐尔

C.毕加索

D.埃克