题目

I’m Amanda Gorman, I’ve been crazy about writing poetry since third grade. After polishing my skills for about a decade and having judges review my poetry and videos of my performances, I was named the country’s Youth Poet Laureate in 2017, I’ve read my work at the Library of Congress. It’s been an excellent journey especially since I used to have trouble saying half the alphabet.My twin sister Sarah and I were born very prematurely, which led to lots of ear infections. I didn’t have as much luck as Sarah and the ear infections left me with a severe hearing problem, making it diffi使用大棚栽培农作物时，科技人员常向大棚内释放适量的CO2．这主要是因为（　　）A．CO2会使大棚内的温度升高B．CO2可使害虫窒息死亡C．CO2能灭火可避免火灾的发生D．CO2可促进植物进行光合作用