第十二课作业

houkai123

Studies by the National Cancer Institute suggest that passive smoking may increase the risk of developing cancer, particularly lung cancer.

Many experts in the education sector believe that some private schools, particularly international ones, provide a better education than public schools.

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请侯凯同学按照课堂反馈修订

houkai123

修改版：

Studies by the National Cancer Institute suggest that passive smoking may increase the risk of cancer, particularly lung cancer.

Some parents believe that private schools with smaller class sizes provide a better education than public schools because students have more one on one time with their teachers.