凯恩斯否定传统经济学所认为的“私人利益与社会利益存在一致性”这一基本观点始于1926

Hello, I’m Jessica. My father is a writer, and my mother is a Chinese teacher. We all love reading books. My father asks me, “What do you want to be?” I tell him, “ I want to be a writer like you.” After that, my father asks me to read books and then discuss them with them. “Reading and discussing books are good for your writing, my daughter. They can help you to be a good writer.” My mother walks to us and says, “Let’s do that every Friday, OK?” My father and I are happy and says yes.

小题1:Jessica wants to be a ______________.

A．teacher

B．musician

C．teacher

D．writer小题2:Jessica’s mother teaches _________ in a school.

A．Chinese

B．math

C．writing

D．English小题3:The underlined word “ discuss” means “________ ” in Chinese.

A．争吵

B．批评

C．修理

D．讨论小题4:Jessica’s mother wants to discuss books ________ day（s）a week.

A．one

B．two

C．three

D．four

探索：

（x-1）（x+1）=x²-1；

（x-1）（x²+x+1）=x³-1；

（x-1）（x³+x²+x+1）=x⁴-1；

（x-1）（x⁴+x³+x²+x+1）=x⁵-1；

（1）试求2⁶+2⁵+2⁴+2³+2²+2+1的值；

（2） 2²⁰¹⁰+2²⁰⁰⁹+2²⁰⁰⁸+...+2²+2+1的值的个位数是几？

圆盘造球机开机时轴承温度不能超（）℃。

对材料的强度影响最大的因素是（）。

A、加工方法

B、温度

C、压力

连管的坡度一般要求为（）。

A.2‰

B.3‰

C.1%

D.3%~5%