$\frac{20}{36}和\frac{30}{48}$ ____

Characters: Peppa, George, Mummy Pig, Daddy Pig

Setting: Mummy Pig is working on her computer. Daddy Pig is making soup for lunch.

Peppa: Daddy? Can we go and watch mummy on her computer?

Daddy Pig: Yes, as long as you don't disturb her. She has a lot of important work to do today.

Peppa: Thank you, Daddy!

Peppa: (Peppa and George run into mummy's room.) Mummy. Can George and I sit on your legs and watch you work?

Mummy Pig: Yes, if you both sit quietly.

Peppa: (Peppa and George watch mummy work on the computer for a while.) Mummy? Can we play that computer game Happy Mrs. Chicken?

Mummy Pig: We can play Happy Mrs. Chicken later. But now I have to work.

Peppa: Mummy? Can we help you work?

Mummy Pig: No, Peppa! You mustn't touch the computer. And George, you mustn't touch the computer, either.

Peppa: Yes, George. You mustn't do this (Peppa began to knock on the keyboard).

Mummy Pig: Peppa, stop!

Peppa: Sorry, Mummy. I was just showing George what not to do.

Mummy Pig: Oh, dear. The computer doesn't work!

请从下面两题中任选一题作文。

       一，生活中，有温度的话语可以暖人心扉，让我们如沐春风；有温度的话语可以鼓舞斗志，让我们扬帆启航；有温度的话语可以启迪心灵，让我们豁然开朗；有温度的话语可以陶冶性情，让我们受益终生……

       成长中，无数有温度的话语，伴随我们一路走来。

       请以“有温度的话语”为题目，写一篇文章。

       要求：①除诗歌外，文体不限，可以记叙经历，抒发感情，发表见解等；

       二，请以“          原来就是         ”为题目，写一篇文章。

       要求：①请将题目补充完整并抄写在答题卡上；②除诗歌外，文体不限，可以记叙经历，抒发感情，发表见解等；③字迹工整，书写规范，字数600～800字；④文中请不要出现真实的姓名、校名；⑤文中不得引用、抄袭本试题卷阅读理解部分的材料。

除了下列哪一项之外，其余的都是基因工程的运载体所必须具备的条件 （）