Ⅰ.单词拼写
1．The Olympics are the dream of every __________ (运动员) and they have been training for years to be Olympians.
2．We hope this treatment will reduce the ________ (频率) of heart disease.
3．My brother ________ (更喜欢) meat to vegetables, which is the reason why he is overweight.
4．Many people have come to realise that they should go on a ________ (均衡的) diet.
5．If you don't hear anything ________ (在……之内) seven days, phone again.
6．________ (体操) is a challenging sport.
