2010年4月1日，王某与丁某签订了房屋买卖合同，双方约定：王某将一栋房屋出售给丁某，价款为120万元。丁某支付120万元的价款后，王某于2010年4月10日向丁某交付了房屋，但双方没有办理产权过户登记。
丁某于2010年4月20日将该房屋出租给叶某，租期为2年，双方签汀了书面租赁合同。因房屋价格迅速攀升，2010年5月10日，王某要求丁某返还该房屋，遭到丁某的拒绝。
2010年6月1日，王某因病突然去世，全部遗产由其子小王继承，小王于2010年6月5日办理了产权过户登记，将该房屋产权过户到自己的名下。因房屋价格继续攀升，小王在明知该房屋已经出售给丁某的情况下，拟将该房屋作价200万元丈给杜某，同一小区的韩某提出自己也准备出价200万元，并主张同等条件下的优先购买权。小王在未通知丁某和承租人叶某的情况下，将该房屋卖给了不知情的杜某，双方于2010年6月20日办理了产权过户登记。
2010年7月1日，杜某要求叶某返还该房屋，遭到叶某的拒绝。2010年7月20日，叶某遭遇年祸突然去世。2010年7月30日，杜某要求叶某的妻子赵某返还该房屋，遭到赵某的拒绝。
2010年8月10日，丁某要求解除此前与小往的父亲王某签订的房屋买卖合同，要求小王赔偿损失，并要求小王支付120万元的惩罚性赔偿金。
要求：
根据有关规定，分别回答以下问题：

韩某是否享有优先购买权并说明理由。

Throughout history has (1) changed his physical environment in order to improve his (2) of life. With the tools of technology he has (3) many physical features of the earth. He has (4) woodlands and prairies into farms and made lakes and reservoirs (5) of rivers for irrigation purposes or hydroelectric (6) . Man has also modified the face of the earth by (7) marshes and cutting through mountains to (8) roads and railways.
However, man’s (9) to the physical environment have not always had beneficial results. Today, (10) of the air and water is an increasing danger to the health of the (11) . Each day thousands of tons of gases come out of the exhausts of motor vehicles. (12) from factories pollutes the air of industrialized areas and the surrounding (13) of the countryside. The pollution of water is equally harmful. The whole ecological (14) of the sea is being changed and (15) wastes have already made many rivers lifeless.
Now (16) protection is more pressing than ever before. As we know, massive destruction of the environment has brought about (17) effects and even poses a great (18) to man’s existence. Indifference to these problems will mean committing suicide. Therefore, effective (19) should be taken and laws passed to (20) the environment. Otherwise, man is certain to suffer from the serious consequences caused by this lack of care for his living surroundings.