1. What story can keep you reading until the very end?
The detective story.
2. What do you wish to do when you begin to read a detective story?
We wish to find out the truth before we reach the end.
3. What elements can help you find out the truth of a detective story?
Motive, suspect, clue and alibi.
4. How do detectives use clues to find out the truth?
Detectives use reasoning to find out what those clues truly mean, and put them together to find the truth.
5. What do you think of an alibi?
An alibi is a special kind of evidence, but it can be forged.
答案：1. The detective story.
2. We wish to find out the truth before we reach the end.
3. Motive, suspect, clue and alibi.
4. Detectives use reasoning to find out what those clues truly mean, and put them together to find the truth.
5. An alibi is a special kind of evidence, but it can be forged.
