题目内容
石蜡是组织切片法常用的包埋剂。
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组织切片中,某些结构可以改变染料本身染色特点的能力是异染性。
不管以什么样方向进行切片,两支圆柱状的铅笔都不能切出一个实心圆形。
低倍镜转换高倍镜观察时,要先把待观察结构移到视野中央位置,然后再转换到高倍镜,调焦至清晰观察。
keep up withset upfire offtake the leadadd tostand outin large partvisit withaccount forat a disadvantage2. People browse the Internet, read newspapers and watch TV to _____________ what is happening in the world.3. The university has __________ another large laboratory for students to design more complicated robots.4. I find it very difficult to ___________ the fact that two of our best students failed the exam.5. In the current economy, with unemployment high and competition for jobs fierce, your seume needs to ______________ for all the right reasons.6. She is getting popular since she appeared in a TV interview last month. Her new movie will no doubt __________ her growing fame.7. The developed countries should ______________ in reducing greenhouse gas emissions (排放) and provide support for the developing nations to follow.8. If your spoken English is not very good, then you may be _______________ when you are looking for a job.9. Their success was due ___________ to their well-conceived plan.10. He has been so occupied with his work these days that he barely has time to ____________ his friends.
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