As a child, Wang Junyan never dreamed of becoming a famous person on TV. However, she is the presenter for Universe TV news programmes. She told me that____, working hard and believing in what was true made her success. Her mother was a strong character. She worked extremely hard____through school. Her attitude towards life will never stop influencing her thoughts and actions. After graduating from university, Junyan chose to be a journalist to help the people and the government____and catch the guilty people. It wasn't easy but she never gave up. This____because she won an award for her report. When asked about her secret to success,____she told us, “Nothing that I learned from my mother has ever left me. Today when I'm looking for stories, I still feel like I am turning over stones to see what might be hiding beneath!”

右图是美国军费开支曲线图，根据该图获取的历史信息不正确的是（   ）

若 $\{\begin{array}{c}x=a\\ y=b\end{array}$ 是方程 $2x+y=0$ 的一个解，则 $6a+3b-2$ =____；

已知矩阵A=$\begin{array}{cc}1& 1\\ 1& 2\end{array}$，且AB=$\begin{array}{cc}1& 0\\ 0& 1\end{array}$，则矩阵B=____ ．