2. 外语
  3. This medicine is highly (effect) ______ in treating skin cancer if it is applied early enough.

This medicine is highly (effect) ______ in treating skin cancer if it is applied early enough.

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问题 This medicine is highly (effect) ______ in treating skin cancer if it is applied early enough.
选项
答案effective
解析 本题考查词性转换。系动词is后面需用形容词或名词作表语，而highly是副词，用来修饰形容词，因此该处应填形容词。effect可做名词或动词，其形容词形式为effective．因此，空格处填effective。注意常用的动词+ive构成形容词的还有；active，attractive，creative，directive等。
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