人体感染H1N1病毒后，神经-激素-免疫调节网络共同调节清除病毒的过程，请回答与此有

阅读短文，选择正确的答案。

      Look! This is my classroom. It's big and bright. It's nice and clean. It's on the fourth floor. What's in the

classroom? There are two boards, four fans, six lights, many desks and chairs. The wall is white. The floor is

grey. The doors are red. The windows are brown. You can see four pictures on the wall. They're colourful.

We have an air conditioner. It looks new. Look at the teachers' desk. It's orange. There is a beautiful flower

on it. It's for our teachers. Look! This is my seat. It's near the window. We study and play in the classroom

every day. We have fun every day. I like my classroom.

1. My classroom is on the ______________ floor.

A. first

B. third

C. fourth

2. My classroom is big and ______________.

A. bright

B. small

C. dirty

3. There are ______________ fans and ______________ lights in the classroom.

A. three, four

B. four, six

C. two, three

4. You can see ______________ pictures on the wall.

A. four

B. three

C. five

5. My seat's near the ______________.

A. window

B. door

C. teachers' desk

证明：若p是大于5的质数，则p²-1是24的倍数．

下列叙述正确的是（　　）

A．10 mL 0.1 mol/L NH₄Cl溶液与5 mL 0.2 mol/L NaOH溶液混合：c（Cl^-）=c（Na⁺）＞c（OH^-）＞c（H⁺）

B．0.1mol/L pH为4的NaHB的溶液中，c（HB^-）＞c（H₂B）＞c（B^2-）

C．常温时，某溶液中由水电离出来的c（H⁺）和c（OH^-）的乘积为1×10^-24，该溶液中一定可以大量存在K⁺、Na⁺、AlO₂^-、SO₄^2-

D．相同条件下，pH=5的①NH₄Cl溶液、②CH₃COOH溶液、③稀盐酸溶液中由水电离出的c （H⁺）：①＞②＞③

患者，女，30岁，癫痫，长期服用苯妥英钠，易并发何种口腔疾患（）

A.龈缘炎

B.牙龈纤维瘤

C.青春期牙龈炎

D.妊娠期牙龈炎

E.药物性牙龈炎

下列加横线的词语的意义与现代汉语相同的一项是[ ]

A．微夫人之力不及此          

B．行李之往来，共其乏困

C．舍郑以为东道主             

D．敢以烦执事