网址：http://m.1010jiajiao.com/timu3_id_2427710[举报]
(1)造血干细胞转变为a、b、c等细胞的过程被称为_________。
(2)③过程是在X的刺激和a细胞等的参与下共同完成的。与③过程相比，④过程的应答特点是______。
(3)⑤过程的产物Y的化学本质是___ ___，参与其合成并分泌的膜性细胞器 、高尔基体及线粒体。
(4)若X是禽流感病毒，则患者体内消灭X必须依靠a增殖分化的淋巴细胞去裂解__ _ ___。如果X是HIV，则由于图中___ ___细胞的大量死亡，导致患者几乎丧失一切免疫功能而死亡。 查看习题详情和答案>>
下面各句中哪些是含有定语从句的复合句？请从中找出引导定语从句的关系代词，在它们的下面划线。
1．Do you know who called me just now?
2．I will never forget him who helps me when I am in trouble．
3．Have you decided which to buy?
4．He always wants to get everything which he hopes to have．
5．The boy told me that he had lived in a very poor and small village for years．
6．Have you found out the place that you will go to on the map?
7．Never tell your secrets to him that can't keep secrets．
8．God helps him who helps himself．
假如你叫刘明，是美国中学生艾丽斯的朋友，你收到了她的电子邮件，请给她回复，回答她的问题，提出你的建议。并就此事谈谈你的看法。
内容应包括：
你是否遇到过这样的问题？
该借给她钱还是不借给她钱？
若她忘记归还该怎么办？
注意：恰当运用条件状语从句，句子结构要完整，80词左右。
Dear Liu Ming,
Hi! I’m so sad. Angela is a close friend of mine. This morning she wanted to borrow some money from me. If I lend her the money, I’m afraid she won’t pay me back. I don’t know what to do. Do you have the same problem? I need your help. I’m looking forward to hearing from you soon.
Yours,
Alice
Dear Alice,
I’m glad to hear from you .
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
I hope what I said can help you.
Yours,
Liu Ming
查看习题详情和答案>>
假如你叫刘明，是美国中学生艾丽斯的朋友，你收到了她的电子邮件，请给她回复，回答她的问题，提出你的建议。并就此事谈谈你的看法。
内容应包括：
你是否遇到过这样的问题？
该借给她钱还是不借给她钱？
若她忘记归还该怎么办？
注意：恰当运用条件状语从句，句子结构要完整，80词左右。
Dear Liu Ming,
Hi! I’m so sad. Angela is a close friend of mine. This morning she wanted to borrow some money from me. If I lend her the money, I’m afraid she won’t pay me back. I don’t know what to do. Do you have the same problem? I need your help. I’m looking forward to hearing from you soon.
Yours,
Alice
Dear Alice,
I’m glad to hear from you .
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
I hope what I said can help you.
Yours,
Liu Ming