下述关于多发性骨软骨瘤恶变的征象，不正确的是()A．远处出现转移性病灶 B．软骨帽增

Dear Michael,

I’m very glad to be your pen-friend. My name is Li Tian, and my English name is Leo. I’m from Wuhan. It’s in the middle of China. I’m in the Number 3 Middle School. There are 55 students in my class, and 28 are boys. From Monday to Friday, we have Chinese, math, physics and P.E. in the morning. I like Chinese and physics, because they’re interesting. I don’t like math. It’s too boring. At noon, I have to have lunch at school because my home is far from my school. We usually have two classes in the afternoon. After school , I like watching TV and listening to the music. I also like playing football, but not the American football.

Please write to me soon.

Yours,

Leo

小题1:This letter is for_____.

A．Leo

B．Mike

C．Li Tian

D．Michael小题2:There are _____girls in Leo’s class.

A．55

B．28

C．27

D．50小题3:How many classes does Leo g have every weekday(工作日)?

A．Four.

B．Five.

C．Two.

D．Six小题4:Where is Leo from?  He is from ______.

A．America

B．A middle part of China

C．Brazil

D．England

反应①是自海藻灰中提取碘的主要反应，反应②是自智利硝石中提取碘的主要反应：

①2NaI+MnO₂+3H₂SO₄=2NaHSO₄+MnSO₄+2H₂O+I₂；

②2NaIO₃+5NaHSO₃=2Na₂SO₄+3NaHSO₄+H₂O+I₂．

已知NaIO₃的氧化性与MnO₂相近，下列有关说法正确的是（　　）

A．两个反应中生成等量的I₂时转移的电子数相等

B．I₂在反应①中是氧化产物，在反应②中是还原产物

C．NaI和NaIO₃在一定条件下能反应生成I₂

D．NaIO₃在化学反应中只能作氧化剂，不能作还原剂

某女性患者行子宫全切术后无尿4天属于何性质的肾衰（）。

A.肾前性肾衰

B.肾后性肾衰

C.肾性肾衰

D.去肾性肾衰

E.以上均不是

长度不调属于（）

A.毛變均分类第Ⅰ类错

B.毛變均分类第Ⅱ类错

C.毛變均分类第Ⅲ类错

D.毛變均分类第Ⅳ类错

E.毛變均分类第Ⅴ类错