1 . 根据句意，选择单词或短语并以其适当形式填空。

A. abrupt        B. keen          C. considerate        D. subjective          E. numb

1. My fingers are ________ with cold.
2. It was very ________ of him to wait.
3. I wasn't too ________ on physics and chemistry.
4. He caught me off balance with his ________ change of subject.
5. Sometimes our opinions are ________, so we'd better think twice before we make a decision.