字母的

1.Delta is the fourth letter of the Greek alphabet.

δ字母中的第四个字母。

2.The heading was in large letters.

标题用大号字母印刷的。

3.The word “debt” contains a mute letter.

在debt这个词中有一个不发音的字母。

4.In a dictionary the words are arranged in alphabetical order.

词典里的词按字母顺序编排的。

5.It's very difficult! but I think it should be "hexad", and "hex" left when we take away the last two letters.

一个什么样的五个字母的词，当你拿掉两个字母后还有六个剩下？