题目内容
17．If you want to keep healthy，you should watch _______ TV and exercise _______．（ ）| A． | more； more | B． | less； less | C． | more； less | D． | less； more |
分析 如果你想保持健康，你应该少看电视，多运动．
解答 答案：D．
形容词的比较级要有比较的对象，根据"If you want to keep healthy，"可知如果你想保持健康的话，应该少看电视，多运动，故选D．
点评 首先要掌握形容词的比较级的用法，然后结合具体的题目，就可以确定正确答案
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