从以上单词中选出最适当的一个单词,填入空格内.
1 Scientists sometimes need very (        ) instruments.

2 Resting in bed will often (        ) a cold.

3 The mistake you made (        ) me you hadn't studied your lesson.

4 He sent the written request to (        ) his telephone order.

5 The captain of a ship (        ) all the offices and men.

答案:
1 Scientists sometimes need very (delicate) instruments.

2 Resting in bed will often (cure) a cold.

3 The mistake you made (convinced) me you hadn't studied your lesson.

4 He sent the written request to (confirm) his telephone order.

5 The captain of a ship (commands) all the offices and men.