— Wow, your school is great!
— It is _______ school in the city.
A:much more beautiful
B:much beautiful
C:the most beautiful
D:beautiful
某四冲程汽油机工作时转速是2400r/min.关于此热机的工作下列说法正确的是( )
一件商品打八折,现价比原价便宜了20%。(判断对错)