Many lifestyle patterns do such ______ great harm to health that they actually speed up ______ weakening of the human body.
 
【正确答案】 B
【答案解析】 句意:很多生活方式对身体健康是很有害的,实际上它们能加快体质变弱。do harm to...为固定短语,意为“对……有害”;第二空为特指的用法,即特指体质变弱,故用定冠词the。