Interviewer: Hi, Grandma Li. Welcome to our programme (节目).____

Grandma Li: Life was very different in China many years ago.

Interviewer:____

Grandma Li: We lived in a small house. We didn't have enough food.____

Interviewer: How about now?

Grandma Li:____We have got lots of food. There are lots of buses and cars. Life is convenient (方便的）now. I enjoy my life.

Interviewer:____Goodbye.

Grandma Li: Bye.

计算或化简求值
（1）$\left|\sqrt{3}-2\right|-(-2{)}^2+2\sin {60}^{°}$
（2）先化简再求值：$\frac{x}{x+2}-\frac{x^2+2x+1}{x+2}÷\frac{x^2-1}{x-1}$,其中$x=\sqrt{3}-2$

____ 的相反数是它本身．

改革开放的30多年是中国特色社会主义理论体系形成与发展的30多年。中国特色社会主义理论体系是马克思主义中国化最新成果，是党最宝贵的政治和精神财富。由此可见（  ）