按照句子顺序给图片写序号。
①They'll visit our classroom.
②They'll visit the art room.
③They'll go to the hall.
④They'll go to the library.
⑤They'll meet the teachers in the meeting room.
____
第二次工业革命中出现的新能源是
二战后西欧经济得到了迅速恢复与发展,其发展的有利条件中与民生关系最紧密的是( )