Sandy, you are late. The museum _____ just half an hour ago. It ______ from 8 a. m. to 5 p.m. every day.
A:closed; opens
B:close; opens
C:closed; is open
D:closes; is open
选择合适的解释,填上序号
疾:A、痛恨;B、急速,猛烈; C、疾病;D、痛苦
①打预防针可以预防疾病。____
②他疾恶如仇,处处为老百姓的安危着想。____
③一阵疾风吹来,树林发出“沙沙”的声音。____
④共产党非常关心群众的疾苦。____
― How many pencils are there?
― There are____.
在数学表达式:(1)﹣3<0 (2)3x+5>0 (3)x2﹣6(4)x=﹣2 (5)y≠0 (6)x≥50 中,不等式的个数是( )