A:风力侵蚀加强
B:海洋风暴潮加剧
C:海洋赤潮多发
D:病虫害减少,有利于来年农作物生长
There is an interesting place ____ (call) the Great Wall in China.
已知a﹣b=2+3,b﹣c=2﹣3,则a2+b2+c2﹣ab﹣bc﹣ac的值为( )
It ____ him one hour ____ ____ his homework.