题目内容
20．Chemistry seems to be _____ for me of all the subjects．（ ）| A． | difficult | B． | too difficult | ||
| C． | more difficult | D． | the most difficult |
分析 对于我来说，化学好像是所有学科中最难的．
解答 答案：D 根据of all the subjects可知，此处表示比较的范围是"所有学科中"，要用形容词的最高级；要用形容词最高级的表达是：the+形容词最高级+in/of+比较的范围．所以要用形容词difficult最高级形式是 most difficult，并且形容词最高级前要加定冠词the，意思是"最难的"，故选D．
点评 判断形容词或副词的比较级和最高级，主要是看几者之间的比较．两者之间用比较级，三者或三者以上比较用最高级形式．本题是三者之间的比较．
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