下列有关酶的特性及相关实验的叙述正确的是（　　）

    When I was in the middle school, I was good at many subjects ____ (除了) English. It was a little difficult for me and I often made ____ (错误) in the test. I felt very sad.

    Luckily, my English teacher Miss Li was ____（相当地）kind. She advised me to buy a dictionary and ____(提议，提出) to help me solve ____ (主要的，基础的) problems. Miss Li said that I ____(应该) speak English aloud and read ____(大量，众多) of English books. With her help, my English improved ____(迅速地,快地). It was much ____ (更简单) for me to remember the words than before. And I became one of the actresses in the school English show at ____(终于，最后).

    I was thankful to my dear English teacher, Miss Li.

某工厂原来用氢氧化钠溶液中和所排废水中的硫酸，现改用氢氧化钾溶液中和以得到钾肥，若氢氧化钾溶液的溶质质量分数与原来氢氧化钠溶液的溶质质量分数相同，则此时碱流量阀调节的方法是（　　）