1._______________ （通过体育锻炼）,we can always stay healthy.
　　2.According to the scientific research , _____________ （听音乐能使我们放松）.Is this really true?
　　3.______________ （我们绝对不能）ignore the value of knowledge.
　　4.As is known to all, ______________ （假冒伪劣商品）harm the interests of consumers.
　　5.Faced with failure,some people can stand up to it, _____________ （从失败中汲取教训）and try hard to fulfill what they are determined to do.

　　答案与解析：
　　1. By taking exercises
　　2. listening to music enables us to feel relaxed
　　3. On no account can we
　　4. fake and inferior commodities
　　5. draw useful lessons from it