(10分)据报道：2011年12月31日深圳宝安沙井39岁患者陈某某，被诊断为人感染高致病性禽流感（H5N1）而引发的多脏器衰竭而死亡。禽流感再一次又引起了人们的高度关注。右图是高致病性禽流感病毒H5N1侵入人体后发生免疫反应的图解，图中A、B、C为有关的物质或结构。请据图回答问题：

（1）物质B的化学本质是 ______________。
（2）物质A为____________，是由效应T细胞分泌，又能诱导生成更多的效应_________ 细胞，这是一种____________调节机制。  
（3）效应T细胞与靶细胞密切接触，激活靶细胞内的_____________，并使其通透性、渗透压发生改变，最终___________，释放出病毒与抗体结合，使病毒失去_________________________宿主细胞的能力。
（4）T细胞由__________分化而来,成熟于______________，并随血液和淋巴在体内流动。T细胞在人体免疫应答中除具有图示增殖分化的功能外，还能 ______________。

Dear Jane,
I have to(必须) go to work(工作) now. I prepare(准备) these things for you. Your schoolbag is on the desk. Your pen ,books,keys and your school card are in your schoolbag. Your clothes(衣服)and hat are on the dresser(梳妆台). The shoes(鞋子) are under the bed. Don’t forget your breakfast(早餐). It’s in the microwave oven(微波炉).
Love you.
Mom
【小题1】    leaves留下 the note便条.

A．Jane

B．Jane’s father

C．Jane’s brother

D．Jane’s mother

【小题2】What’s in the schoolbag?
a. the pen b. the shoes c. the keys d. the school card e. the hat

A．a b c

B．b c d

C．a c d

D．c d e

【小题3】Where are the shoes？They’re     .

A．on the bed.

B．on the dresser

C．under the bed

D．in the schoolbag

【小题4】Where are the schoolbag?

A．On the desk

B．In the desk

C．Under the bed

D．On the dresser

【小题5】The underlined划线的“forget”means意思是    .

A．忘记

B．拿走

C．带来

D．记住

下列字母中，含有相同音素的一组字母是_______.

A. HZKG      B. UQWT      C. EPTG   D. LMNK

 

Dear Jane,

   I have to(必须) go to work(工作) now. I prepare(准备) these things for you. Your schoolbag is on the desk. Your pen ,books,keys and your school card are in your schoolbag. Your clothes(衣服)and hat are on the dresser(梳妆台). The shoes(鞋子) are under the bed. Don’t forget your breakfast(早餐). It’s in the microwave oven(微波炉).

   Love you.

                                Mom

1.     leaves留下 the note便条.

A. Jane   B. Jane’s father  C. Jane’s brother  D. Jane’s mother

2.What’s in the schoolbag?

a. the pen b. the shoes c. the keys d. the school card e. the hat

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

3.Where are the shoes？They’re     .

A. on the bed. B. on the dresser C. under the bed  D. in the schoolbag

4.Where are the schoolbag?

A. On the desk   B. In the desk    C. Under the bed     D. On the dresser

5.The underlined划线的“forget”means意思是    .

A. 忘记    B. 拿走   C. 带来     D. 记住

 

“中华人民共和国”的缩略词是______.

A．UN              B．PRC             C．CCTV            D．NBA