classes: lecturer. Because the English level of the class is not high, only a few are able to hear, read, and understand the lectures, so the effectiveness of teaching in English is not high. curriculum. Because the English level of the class is not high, only a few are able to hear, read, and understand the lectures, so the effectiveness of teaching in English is not high. facility. Because the English level of the class is not high, only a few are able to hear, read, and understand the lectures, so the effectiveness of teaching in English is not high. general. Because the English level of the class is not high, only a few are able to hear, read, and understand the lectures, so the effectiveness of teaching in English is not high.