根据首字母写出正确的单词形式.

1. Edward d_______ himself to scientific research after graduating from university.

2. Most of the Americans v_____ for Obama to be president.

3. The design of the product must be r______ to people’s needs.

4. The fire started in the middle of the night, so most of the people were t_____ in the burning building.

5. The thief used a false i_____ to take money from the bank.

计算机的外存是用来存储数据的部件，外存包括：硬盘、软盘、CD-ROM等。