问题
单项选择题
AATAAA是
A．真核生物的顺式作用元件
B．启动子的辨认序列
C．真核生物的反式作用因子
D．真核生物转录加尾修饰点
答案
参考答案：D
解析：AATAAA是真核生物转录加尾修饰点。
搜题请搜索小程序“爱下问搜题”
AATAAA是
A．真核生物的顺式作用元件
B．启动子的辨认序列
C．真核生物的反式作用因子
D．真核生物转录加尾修饰点
参考答案：D
解析：AATAAA是真核生物转录加尾修饰点。
| 阅读理解。 | |
 I was born in the computer age. 1 . They were already adults when the first personal computer came out. But with the development of technology, more jobs need skills like typing, sending e-mails, etc. When I was in middle school, they started asking me to help them do things with computers. 2 . But my dad would make me stay up to finish his work. My parents even made me talk on the phone whenever there was something wrong with our computer. After realizing my parents really need my help, I tried to be more understanding. After all, I wasn't born knowing how to use a computer. 3 ? I feel that teaching them by myself is better. We can communicate more and share understanding. I know it's usually hard for adults to learn new skills. And a patient teacher is helpful for them. 4 . Parents and teens need to help each other.
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