We all know there exists great void (空白) in the public educational system when it comes to 26 to STEM(Science, Technology, Engineering Mathematics) courses. One educator named Dori Roberts decided to do something to change this system. Dori taught high school engineering for 11 years. She noticed there was a real void in quality STEM education at all 27 of the public educational system. She said, "I started Engineering For Kids (EFK) after noticing a real lack of math, science and engineering programs to 28 my own kids in." She decided to start an afterschool program where children 29 in STEM-based competitions. The club grew quickly and when it reached 180 members and the kids in the program won several state 30 , she decided to devote all her time to cultivating and 31 it. The global business EFK was born. Dori began operating EFK out of her Virginia home, which she then expanded to 32 recreation centers. Today, the EFK program 33 over 144 branches in 32 states within the United States and in 21 countries. Sales have doubled from $5 million in 2014 to $10 million in 2015, with 25 new branches planned for 2016. The EFK website states, "Our nation is not 34 enough engineers. Our philosophy is to inspire kids at a young age to understand that engineering is a great 35 ." A) attracted B) career C) championships D) degrees E) developing F) enroll G) exposure H) feasible I) feeding J) graduating K) interest L) levels M) local N) operates O) participated