制作人的口腔上皮细胞临时装片时，染色的正确方法是（ ）
A．将染液滴在盖玻片上
B．将碘液滴在盖玻片上的一侧，用吸水纸在另一侧吸引
C．先滴染液，再将口腔上皮的碎屑涂抹在染液上
D．将染液直接滴在材料上
制作人的口腔上皮细胞临时装片时，染色的正确方法是把稀碘液滴在盖玻片的一侧，用吸水纸从另一侧吸引，直到染液浸润到标本的全部．这样可以对比明显，便于观察．
故选B．
| 从对话后的选项中选择适当的选项补全对话。 | |
| A: You must be really excited about leaving for London tomorrow, Judy! B: Yeah. 1______ A: Nervous about what? B: I don't know many of the customs and manners in UK. 2______ A: Sure. B: 3______ A: Well, it's important to be on time when you're invited for dinner. It's impolite to arrive late. British expect their guests to be on time. B: Then how long may I stay there? A: 4______ Or you seem to have come only for the meal. When your friends seem to be getting sleepy and running out of things, it's time to leave. The next day, call or write a thank-you note to say how much you enjoyed the evening. | |
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