已知向量$\overrightarrow{a}=\left(1,2\right)$，$\overrightarrow{b}=\left(2,-3\right)$，若向量$\overrightarrow{c}$满足$\left(\overrightarrow{c}+\overrightarrow{a}\right)\parallel \overrightarrow{b}$，$\overrightarrow{c}\perp \left(\overrightarrow{a}+\overrightarrow{b}\right)$，则$\overrightarrow{c}$=(   )

米勒的实验证明了（　　）

Dear Diary,

    What a day!I started at my new school this morning and had a great time.I made lots of new friends and really liked my teachers.I was so nervous last night,but I had no reason(原因) to be .Everyone was so friendly.They made me feel at home!

    The day started very early at 7：00am.I had breakfast with my mum.She could tell(看出)that I was very anxious.Mum kept asking me what was wrong. I thought she knew that I was nervous about starting at a new school. She told me I had nothing to worry about and that everyone would be friendly and love me.

    My mum dropped me off(让我下车)at the school gate at about 7：50 am．A little girl with fair hair got dropped off at the same time and started waving at me．She ran over and told me her name was Abigail．It turned out that we were in the same class．Abigail was very nice and we became close right away．We spent all morning together and began to talk with another girl called Stacey．The three of us sat together in class all day and we even made our way home together! Time went by so quickly．Our teacher told us that tomorrow we would really start learning and developing new skills(技能)．

    It is late now so I am going to sleep,but I cannot wait till tomorrow!I believe I'm going to enjoy my time at my new school!I hope that my new friends feel the same too．

Casey

根据材料内容选择最佳答案。

语法填空

    I was raised in New York City where it's very cold every winter. In the sixth grade, a teacher offered ____ (bring) some students to a homeless shelter after school. I went with my friends and the teacher for several weeks. ____, I continued to volunteer to help when they stopped going together. Because I was good ____ sewing, I was told to help out with the sewing kit when any guests needed some repairs. Throughout high school I continued to come each week after school, setting up my sewing kit which ____ (grow) larger and larger. I got to know the guests who came ____ (regular).

    Later on, I started ____sewing club with my friend and we taught ____ (we) fellow students how to sew. We made heart-shaped pillows for sick ____ (child) and the elderly. Every time it rained I would think about the umbrellas ____ (design) before. In the future I hope to continue helping others as much as I can. It is the most important thing I____ (do) ever since.