光纤熔接机清洁物镜时，电极压板螺丝不用完全卸下。 （ ）
参考答案：对
首字母填词。
1. He gave his daughter a large a _____ of money.
2. Bread is baked in an o_____.
3. You should a _____ some water to the soup.
4. We need two t _____ of honey.
5. How m _____ yogurt do you want to buy?
细胞数目增多是由于
A．细胞的分裂
B．细胞的分化
C．细胞的生长
D．细胞的成熟
