显像剂在病变组织中的浓聚明显低于周围正常组织，此种显像称为()
A．热区显像
B．冷区显像
C．早期显像
D．延迟显像
E．阳性显像问题
参考答案：B
根据句意及汉语提示完成句子。
1. Please make a _____ (对话)after the model.
2. Can you recite more _____ (对白)?
3. Nowadays, women _____ (护士) are still very popu-lar.
4. The teacher asked us to _____ (背诵) the text.
5. The actors who played the roles of Romeo and Juliet Were _____ (极佳的).
6. The _____ (仆人) will serve you the dessert duringThe dinner.
7. She sits at the back _____ (排) of the classroom.
8. He speaks with a strong southern _____ (口音).
大豆的花芽分化较早，一般在第一片复叶出现就开始。
