题目

Three Old Western Buildings with Over a Century’s History Known to Eastern People Picture NameStatue of LibertyEiffel Iron Tower Leaning Tower of Pisa PositionNew York, by the mouth of Hudson River, AmericaParis, by Seine River, FrancePisa, on the square of this city, Italy HistoryBuilt from 1874 to 1884, carried to today’s position in 1886Built in 1889 and repaired in the 1980s,used to be a bad designBuilt from 1173 to 1372, famous for its leaning due to a bad design of position DesignerFrederic, a FrenchmanEiffel, a FrenchmanItalians like Pisano and other Europeans Building purpo改变内能有不同的方式，图甲是在一个配有活塞的厚壁玻璃筒里放一小团硝化棉，当迅速压下活塞时，可看见筒内棉花燃烧起来．这是通过的方式使玻璃筒内空气的内能 （填“增加”或“减少”）．图乙是通过的方式使试管里水的内能发生改变．