题目内容

Section B8.A) By bus.B) ON foot.C) By taxi.D) By bicycle.9.A) A report.B) A project.C) A plan.D) A design.10.A) He is an engineer.B) He is a doctor.C) He is a programmer.D) He is a manager.11.A) Dealing with angry customers.B) Writing work reports.C) Giving presentations.D) Working on weekends.12.A) To visit friends.B) To see a doctor.C) To take a holiday.D) To do business.13.A) It had a flat tire.B) Its front window was broken.C) It was out of fuel.D) Its rear window was broken.14.A) Attend a job fair.B) Read newspapers.C) Visit the website .D) Ask her friends for help.

查看答案
更多问题

P 140T2Answer the following questions.

细胞冻存时,常用的冷冻保护剂有()和甘油。()对大部分细胞无毒性作用,在细胞冻存液中被广泛使用,其常用的最终浓度为()。

从其他实验室购买的细胞株,经过()稳定传代后,应该及时冻存。

MTT法检测细胞活性时,()线粒体中的脱氢酶能使外源性的四唑盐还原为难溶性的()色结晶物并沉积在细胞中,而()则没有这种功能。在一定细胞数量范围内,蓝紫色结晶物形成的量与()数成正比。请选择下面的正确字母填入上述空白处:A.活细胞;B.蓝紫色;C.死细胞。

答案查题题库