问题
选择题
某同学在观察口腔上皮细胞临时装片时，发现视野中的细胞有重叠现象，不宜观察。此时，他可采取的方法是 [ ]
A．换用高倍目镜或物镜重新观察
B．移动装片，寻找合适的观察视野
C．选用较小的光圈和平面反光镜
D．换凹面镜并稍微调节细准焦螺旋
答案
答案：B
搜题请搜索小程序“爱下问搜题”
某同学在观察口腔上皮细胞临时装片时，发现视野中的细胞有重叠现象，不宜观察。此时，他可采取的方法是 [ ]
A．换用高倍目镜或物镜重新观察
B．移动装片，寻找合适的观察视野
C．选用较小的光圈和平面反光镜
D．换凹面镜并稍微调节细准焦螺旋
答案：B
| 改错 | |
| 1. I saw him coming yesterday. 2.—How many is the pork? —Seven yuan a kilo. 3. Don't be later again.4. I am free in the moment. 5. I am afraid this isn't her. 6. In winter there is many ice and snow. 7. There is no any time to think about it. 8. Hello，May I speak Jim? 9. I would like to have other piece of cake. 10. What a good work! | ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ |