1950年，东北人民政府规定在大区范围内对煤炭、钢材等多种生产资料统一分配，随后，东北地区计划分配的物资种类逐年增加。从1953年起，计划分配调拨体制开始在全国铺开。这反映了中国计划经济体制（    ）

已知函数$f\left(x\right)=\sin \left(2x+\phi \right)$，其中$\phi$为实数，若$f\left(x\right)\le f\left(\frac{\mathrm{\pi }}{6}\right)$对$x\in R$恒成立，且$f\left(\frac{\mathrm{\pi }}{2}\right)>f\left(\mathrm{\pi }\right)$，则$f\left(x\right)$的单调递增区间是（  ）

    When I was in the ____ (九) grade, luckily, I was chosen to be the princess in the school play. For weeks my mother had helped me practice my lines. But ____ (一旦) on the stage, every word disappeared from my head. Then my teacher asked me to change my role to be a narrator (解说者) for the play.

    ____ (尽管) I didn't tell my mother what had happened that day, she noticed my unhappiness. She asked if I wanted to take a walk in the garden.

    It was a lovely spring day. We could see several dandelions (蒲公英) ____ (在…中间) the grass. I watched my mother bend down by one of the dandelions. "I think I'll dig up all these weeds (野草)," she said. "From now on, we'll only have roses in this garden."

    "But I like dandelions," I disagreed. "All flowers are beautiful-even dandelions!"

    My mother looked ____ (严肃地) at me. "Yes, every flower gives pleasure in its ____ (自己的) way, doesn't it?" she asked thoughtfully. I nodded. "And that is true of people, too," she added.

    When I ____(意识到) that she had guessed my pain, I started to cry and told her the ____ (真相). "But you will be a wonderful narrator," she said, reminding me of how much I loved to read stories aloud.

    Thanks to my mother's encouragement, I got to know everybody had his or her ____ (价值) in the world. I felt ____ (骄傲的) of the role in the play.