题干
—How do you learn English？
—I learn English by _________.
A：listen to cassettes
B：speak it
C：listening to cassettes
D：ask the teacher
答案(点此获取答案解析）
C
—How do you learn English？
—I learn English by _________.
A：listen to cassettes
B：speak it
C：listening to cassettes
D：ask the teacher
“以旧换新”活动的推出有利于