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

烧水用的铝壶内壁常会附着水垢，水垢的主要成分是CaCO₃，和Mg(OH)₂盐酸可以把水垢除掉，有关的化学方程式是　       　，　           ，若加入盐酸的量过多，也会损坏铝壶，其原因是　                  （用化学方程式表示）。