-- No one_______ be compared with Messi in playing football.

--- Oh, you are really his big fan.

A．might

B．could

C．must

D．can

谚语说冬季“十雾九晴”，意思是霜冻多发生在晴朗的夜晚，原因是（   ）

A．大气逆辐射弱

B．大气逆辐射强

C．凝结核多

D．气温高