(11分)下图甲、乙分别表示我国医学工作者自主研制SARS灭活疫苗过程中，某志愿者接种疫苗后两周内体温和抗体浓度的变化。请据图回答下列问题：

（1）注射疫苗后，志愿者出现轻度发热现象，调节机体产热的激素主要有          
                      ，维持体温恒定的调节方式是                      调节，
体温调节中枢是______________。
（2）若该志愿者注射疫苗后的第15天感染SARS病毒，请在乙图中画出其体内抗体变化曲线。抗体的本质是_________,由_____________直接产生，抗体合成及分泌的途径是________________________________________________________（2分） 。
（3）研究发现SARS病毒的增殖需要逆转录酶，说明SARS病毒的遗传物质是       
；从遗传物质分析，研制SARS疫苗困难的主要原因是                            。 

书面表达

　　根据下面的提示，写一篇50～60词的短文，向新到你班的John介绍你们班教室的情况。

　　①教室在四楼，右边的第二个房间。

　　②教室长12米，宽8米。

　　③前面的墙上除了有块黑板外，还有两张地图：中国地图和世界地图。

　　④教室里有70套桌椅和一张讲桌，讲桌有些花。在拐角处的桌子上有一台电视机。

　　⑤教室既整洁又明亮。

_____________________________________________________________________

（A）很多同学对于学习英语的方法有不同的见解。请你选择表格中所给的信息补全文段的内容。

Ways of learning English
	Not successful	OK	Successful
Li Ying	studying grammar	memorizing the words of pop songs	reading English magazines
Wang Bing		listening to cassettes	studying grammar
Liu Mei	watching English movies		joining the English club

Li Ying has been learning English since she was seven. She thinks the best way to learn new words is by __1__. She says that __2__ also helps a little. As for studying grammar, she finds it is too boring. Wang Bing feels differently. He’s been learning English for six years and really loves it. He thinks __3__ is a great way to learn a language. Liu Mei says that joining the English club is the best way to improve her English. She adds that __4__ is not helpful at all because the people speak too quickly.

（B）请你用所给的提示词（全用上），谈一谈你在学习英语的过程中有哪些有效的及无效的方法，并简单说明原因（50-70词）

make vocabulary lists, ask the teacher for help, work with a group, read the textbook, watch the English-language TV.

_____________________________________________________________________________________________________________________________________________________________

　　小博士：时间名词前可以用的介词在初中阶段学的主要有5个，可以用下面的速记歌来帮助学习。

　　年月之前要用“in”，遇到日期却用“on”。

　　上午下午又是“in”，某日上下午“on”帮忙。

　　正午、晚上用“at”，黎明、午夜也相宜。

　　时钟之前也是“它”，差分过秒不用“它”

　　说“差”要用介词“to”，说“过”要用“past”。

　　多说多练牢牢记，学好英语本事大。

记住了吗？那么就请信心十足地动手做下面的介词填空练习吗：

1　　My birthday is ________Dec. 1st.

2　　He was born ________ 1991.

3　　The People's Republic of China(中华人民共和国) was founded (成立) ________ October 1st 1949.

4　　It was happened(发生) ________ the morning of a cold day.

5　　－Do you have time ________ Sunday evening?

　　 －I'm afraid not. But I am free ________ the afternoon.

6　　I usually go to bed ________ 9:00, but ________ weekends, I'm later.

7　　New school year begins ________ September.

8　　You can get cheap things ________ this time of year.

9　　We enjoy ourselves ________ Children's Day.