题干

如表为动、植物细胞工程的有关内容比较,你认为正确的有(   )

植物细胞工程

动物细胞工程

特殊处理

机械法去除细胞壁

胰蛋白酶处理配制细胞悬液

融合方法

物理方法,化学方法,生物方法

物理方法,化学方法

典型应用

人工种子,种间杂种植物

单克隆抗体的制备

培养液的区别

葡萄糖是离体组织赖以生长的成分

常添加动物血清提供营养

A:0处

B:1处

C:2处

D:3处

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答案(点此获取答案解析)

D

同类题5

任务型阅读

    Thinking about  a future career cm bung a lei of stress. ____This cuts up the question into   workable issues that you and your child can  enjoy dealing with  throughout their  childhood years.Here's how:

    In your child's lift, there are times when they are given the opportunity to see and/or discuss a certain career Schools have Career Day. an aunt or uncle talks about what they  do for a living or your child's youth group goes  on a trip to a hospital und talks to the staff there. ____

    When your Child shows interest in a certain career. you should do some research. Then, you can offer your child some information on that job and related jobs. ____ It is a wonderful the online resource.

    Help your Child weigh the pros and cons for his or her different career interests. Encourage your child to narrow(缩小)the cboice down to five at the most.

    ____ This is a good time to begin ordering in college and  technical school lists. Use the lists and any other information you have found as an ice breaker for more converasations with your child.

    ____ Make this a clear message. Teach your child that part of be ing independent is knowing when and who to lead on,trust and respect.

A.Do you fed you have open communication with your child?

B.The Occupational Oudook Handbook gives you what schooling is needed.

C. The final decision lies with  your child, but you do have the  right to have input.

D. Choosing the right career is one of die mm important decisions  your child will make in life.

E. Figure out the path your child would have to take to obtain the schooling, for his career choices.

F. Each of these nines is an opportunity for you to ask your child what he thought of those jobs or that field of work.

G. Parents  need to learn to help their child conquer this great question by dropping  seeds of  conversation  as time goes by Bud watch them grow into ideas.