How can I get to the science museum?
A:It's next to the cinema.
B:Turn left at the bookstore. Then turn right at the hospital.
解方程:2(x﹣1)=x.
炎热的夏季去海水中冲凉,是不少市民避暑的第一选择,在海边游泳被海蜇蜇伤后,用肥皂水进行清洗可缓解疾病,下列有关海蜇的叙述,正确的是( )
如图,在直三棱柱ABC﹣A1B1C1中,AC⊥BC,且AC=BC=CC1=2,M是AB1,A1B的交点,N是B1C1的中点.
求证:MN⊥平面A1BC;