溶源转变
参考答案:
少数溶源菌由于整合了温和噬菌体的前噬菌体而使自己产生了除免疫性以外的新表型的现象
阅读小天地:读一读,选一选。
Summer holiday is coming. My sister wants to go to Shanghai, because it is very near from my city. My
father wants to go to Sanya. He says, " It is very beautiful and warm." My mother wants to stay at home. She
wants to have a rest (休息). But I am going to Beijing. Because it is not far. At last (最后) our family decides
(决定) to go to Beijing. I am very happy.
1. Where does the family to go at last?
A. Beijing.
B. Sanya.
C. Shanghai.
2. How many people are there in the family?
A. Two.
B. Three.
C. Four.
3. Who wants to stay at home?
A. Sister.
B. Mother.
C. Father.
4. My father wants to go ____________ for the holiday.
A. Shanghai
B. Sanya
C. Beijing
5. Is Beijing very far from my home?
A. Yes, it is.
B. No, it isn't.
C. We don't know.
适用于高分辨率扫描的病变或部位是
A.肝结节病灶
B.甲状腺
C.肺结节
D.椎体
E.肾上腺