推进供给侧结构性改革，是适应和引领经济发展新常态的重大创新。

当前，中国经济面临的供需关系结构失衡，“供需错位”。一方面，过剩产能制约中国经济转型；另一方面，中国的供给体系总体上高端产品供给不足，因此，推进供给侧结构性改革，才能真正启动内需，打造经济发展的新动力。供给侧结构性改革旨在调整经济结构，实现资源要素最优配置，提高生产力水平，提升经济增长的质量和数量。

供给侧改革是有历史成功先例的，20世纪70—80年代，美、英相继陷入“滞胀”，“里根经济学”和“撒切尔主义”分别采用减税和国企改革等措施帮助经济走出衰退的泥沼，供给经济学坚持“小政府、大市场”、自由竞争和企业家精神的理念，认为经济一般不会发生任何生产过剩的危机，更不可能出现就业不足，因为供给会创造自己的需求。

有学者认为，中国的供给侧结构性改革既要借鉴供给经济学理论，又不能简单照搬别国的成功模式和先例。结合材料，运用真理的相关知识加以说明。

    Why does the Leaning Tower of Pisa in Italy lean? It leans because of a mistake. It has leaned almost since the day the builders b____ it.
In 1774, the people of Pisa in Italy wanted to build a bell tower. They wanted the tower to be the m____beautiful bell tower in Italy. The city needed a bell tower because the church(教堂) did not have o____ . As soon as the first floor of the building was finished, the tower started to lean. Builders t____  to make the building straight again as they added more floors, but the leaning tower got w____ as the tower grew. It took about 180 years to finish the tower. Today, the leaning tower has eight f____  It is 54.5 meters t____. And it leans almost 4 meters to one s____ . The tower is also sinking(下沉) into the g ____ on which it was built. Every year, the tower leans a____ 1.7 cm.

根据对话内容，判断正误。

Boy: I'm taller and thinner than you.

Girl: Yes, I'm shorter. But I'm stronger and heavier than you.

地球自转一周360°所需的时间是（   ）