单词拼写（共10小题；每小题1分，满分10分）
根据下列句子及所给汉语注释，在句子右边的横线上写出空缺处各单词的正确形式。
（每空只写一词）
66.The researchers and scientists in Zhongguaancun know that they can only reach the top if they are ready to deal with and learn from _________(失败).
67.Bankruptcy(破产) is one of the common __________(现象) in an economic recession(衰退).
68.There are a lot of blocks of ice _________ (漂浮) on the surface of the lake.
69.I will go __________(商业区) to do some shopping this weekend.
70.Professor Black had written some articles in the local newspaper, ____________ (分析) the current political situation.
71.When he was young, he often ________ (聊天) with others on the Internet.
72.It is good for people engaged in _________ (脑力的) work to take exercise regularly.
73.Let’s go to the theater first and eat _________ (随后).
74.By preparing for and __________(参加) in the Special Olympics, disabled children and adults can develop their ability.
75.The young man learned how to ski under his __________(指导)