2月27日英语作业

请填写以下内容

      

     Done properly, strength training offers many benefits to young athletes. Strength training is even a good idea for kids who (21)_________ (simple) want to look and feel better. In fact, strength training might put your child on (22)__________ lifetime path to better health and fitness.
      But don’t mix up strength training with weight- lifting (举重) or bodybuilding (健身). These activities are driven by (23)___________ (compete), with people taking part in trying to lift heavier weights or build bigger muscles than other athletes. This can put too much pressure on young muscles, (24)_________ (cause) damage to their bodies. For kids, controlled movements are the best, and special attention to proper technique and safety should (25)_________ (pay).
      When can a child begin strength training? Actually, as early as age 7 or 8, strength training can become a (26)_________ (value) part of a fitness plan —as long as the child is old enough (27)_________(follow) directions.
        If your child expresses an interest (28)_________ strength training, remind him or her that strength training means increasing muscle strength. Gaining weight by gaining muscle (29)___________ (be) something else entirely and most safely done after adolescence (青春期), (30)_________ your child has reached the standard both in body and bone. You’d better check with your child’s doctor before beginning a strength training program, especially if your child has a health problem, such as a heart condition or high blood pressure.