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(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>>
根据对话内容，在空白处填写适当的话语（话语可能是一个句子，也可能是一个短语或一个词），使对话完整。(5分)
A: Hi. Bill! You’re reading the novel again.
B: Yes, Tom. I’ll never be tired of it.
A: (1) ______________ have you read it?
B: Three times. Every time I read it, I can always learn something new.
A: Really? (2) _________________________
B: Charles Dickens. I think he is a great English writer.
A: He is also my (3)________ foreign writer. Please let me have a look at it.
B: OK, here you are! … What do you think of it?
A: I think(4)__________________. I haven’t seen such a good novel for long. Where did you buy it?
B: In the Rose Bookshop.
A: I don’t know where it is. (5) _________________
B: No. Only ten minutes’ walk from here, next to the People’s Cinema.
A: Hi. Bill! You’re reading the novel again.
B: Yes, Tom. I’ll never be tired of it.
A: (1) ______________ have you read it?
B: Three times. Every time I read it, I can always learn something new.
A: Really? (2) _________________________
B: Charles Dickens. I think he is a great English writer.
A: He is also my (3)________ foreign writer. Please let me have a look at it.
B: OK, here you are! … What do you think of it?
A: I think(4)__________________. I haven’t seen such a good novel for long. Where did you buy it?
B: In the Rose Bookshop.
A: I don't know where it is. (5) _________________
B: No. Only ten minutes’ walk from here, next to the People’s Cinema. 查看习题详情和答案>>
根据对话内容，在空白处填写适当的话语（话语可能是一个句子，也可能是一个短语或一个词），使对话完整。(5分)
A: Hi. Bill! You’re reading the novel again.
B: Yes, Tom. I’ll never be tired of it.
A: (1) ______________ have you read it?
B: Three times. Every time I read it, I can always learn something new.
A: Really? (2) _________________________
B: Charles Dickens. I think he is a great English writer.
A: He is also my (3)________ foreign writer. Please let me have a look at it.
B: OK, here you are! … What do you think of it?
A: I think(4)__________________. I haven’t seen such a good novel for long. Where did you buy it?
B: In the Rose Bookshop.
A: I don't know where it is. (5) _________________
B: No. Only ten minutes’ walk from here, next to the People’s Cinema.
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根据对话内容。在句中横线上填写适当的话语(话语可能是一个句子．也可能是一个短语或一个单词)．使对话完整、正确。
( Eric came back home from school on Friday evening. )
Eric: Hi, Dad! I'm back.
Dad: Hmm, Eric ! How was your study this week?
Eric: Pretty good. And I have good news to tell you. Do you want to know?
Dad: Of course. (56)______________________ ?
Eric: I won first prize in the English speech contest.
Dad: Well done. (57) your science? Any progress?
Eric: Yes, Dad! At least I tried my best and learned a lot from my mistakes.
Dad: Good! I' m sure that you can catch up with your classmates very soon.
Eric: Thank you, Dad! I've been busy these days and 1 feel tired. Shall we (58). tomorrow?
Dad: A picnic? Why not? We all need to relax ourselves.
Erie: Great! (59) ? And what time?
Dad: Let's go to Central Park at 8:00 in the morning.
Eric: (60). ?
Dad: The radio says it' s a fine day. Finish your homework first and we can help mum do something for the picnic,
Eric : That' s wonderful, Dad.
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