—You'd better ______ first. I'm afraid the size is a bit small for you.
A:pay for them
B:take them off
C:try them on
三角形按边分为等边三角形和锐角三角形。( )
有一个密度均匀的长方体铜块,被截成A、B两块,如图所示,已知LA:LB=3:2,则它们对水平桌面的压力和压强之比分别为( )
小方得知某歌星要到广州开演唱会,门票600多元,她节衣缩食地存钱买演唱会门票。( )