小题1:When can we visit Art Museum ?

A．11:00 am -7:00pm every day

B．8:00am -6:00pm on weekdays

C．8:00am-9:30am every Sunday

D．8:00am -6:00 pm on weekends小题2:Where can we go if we want to learn music?

A．25Jiefang Road

B．95 the Fifth Avenue.

C．120 Xinjin Street

D．Thermopolis Town小题3:If you and your parents visit National Park ,how much should you pay ?

A．$15

B．$30

C．$38

D．$45

面积为900π平方米的圆形，在半径增加后面积达到1600π平方米，则圆的半径增加了多少

A．1米

B．30米

C．10米

D．40米