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
处于生长发育阶段的青少年适当多吃点富含蛋白质的食物，这是因为蛋白质（ ）
南亚的三大地形区，自北向南排列正确的是（ ）
